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Semakin meningkatnya pengguna smartphone serta lengkapnya fitur-fitur yang tersedia di beragam merek smartphone, memungkinkan pengguna dengan mudah dalam bertransaksi hanya dengan sekali sentuhan layar. Mobile commerce adalah model layanan yang sedang berkembang sehingga, memungkinkan orang untuk memesan dan membayar barang dengan mudah menggunakan perangkat seluler. Pemesanan menu di Kantin disebuah institusi saat ini masih banyak menggunakan metode tradisional, yang mengakibatkan beberapa masalah: antrean pembayaran yang lama karena proses pengembalian dana, kasus pelanggan yang melarikan diri tanpa membayar, kekeliruan pesanan antara meja, pesanan yang terlupakan, utang siswa saat memesan, dan tidak adanya menu serta daftar harga di beberapa kantin. Penelitian ini mengembangkan sistem E-Kantin berbasis Android dengan teknologi NFC. Penelitian ini dikategorikan sebagai penelitian kualitatif yang dilakukan dengan metodologi Penelitian dan Pengembangan (R&D). Penggunaan Teknologi NFC sangat sesuai dalam objek riset ini karena setiap tag NFC memiliki identitas unik, sehingga duplikasi menjadi tidak mungkin. Selain itu, NFC beroperasi dalam jarak dekat, meningkatkan keamanan dengan membuat penyadapan menjadi sulit. Aplikasi ini memungkinkan pengguna untuk melakukan pemesanan, melakukan pembayaran untuk barang, dan mengisi saldo melalui metode tunai atau transfer. Secara bersamaan, admin dapat memverifikasi saldo, mengonfirmasi pesanan, menambah atau mengubah menu, dan menerima notifikasi terkait permintaan validasi saldo saat masuk sebagai admin. Aplikasi diujikan dengan metode blackbox. Hasil pengujian dan implementasi menunjukkan semua fungsionalitas sistem beroperasi dengan baik. Pengujian yang dilakukan dengan menempatkan pesanan simultan dari beberapa akun berhasil dieksekusi, dengan semua hasil pesanan tercatat dalam daftar pesanan bersama nomor pesanan masing-masing. Performa waktu rata-rata dalam mengakses setiap fitur adalah 2 Menit.

The Consumer-Oriented Trusted Service Manager (CO-TSM) model has been recognised as a significant advancement in managing applications on Near Field Communication (NFC)-enabled mobile devices and multi-application smart cards. Traditional Trusted Service Manager (TSM) models, while useful, often result in market fragmentation and limit widespread adoption due to their centralised control mechanisms. The CO-TSM model addresses these issues by decentralising management and offering greater flexibility and scalability, making it more adaptable to the evolving needs of embedded systems, particularly in the context of the Internet of Things (IoT) and Radio Frequency Identification (RFID) technologies. This paper provides a comprehensive analysis of the CO-TSM model, highlighting its application in various technological domains such as smart cards, HCE-based NFC mobile phones, TEE-enabled smart home IoT devices, and RFID-based smart supply chains. By evaluating the CO-TSM model’s architecture, implementation challenges, and practical deployment scenarios, this paper demonstrates how CO-TSM can overcome the limitations of traditional TSM approaches. The case studies presented offer practical insights into the model’s adaptability and effectiveness in real-world scenarios. Through this examination, the paper aims to underscore the CO-TSM model’s role in enhancing scalability, flexibility, and user autonomy in secure embedded device management, while also identifying areas for future research and development.

Consumers use increasingly Near Field Communication mobile payment to buy products and services. However, the adoption of NFC mobile payment varies by individual attributes of consumers. This paper aims to study the generational differences in mobile payment acceptance based on the theory of generational cohorts and technology acceptance. Therefore, a research concept and hypotheses were developed. The research methodology included an online survey among Generation Z (digital natives) and X (digital immigrants). A sample of 580 respondents had been analyzed with multi-group Structural Equation Modeling. The comparative analysis revealed that digital immigrants were more influenced by the perceived ease of use, subjective norms, and financial risk of NFC mobile payment. In turn, digital natives intended to use NFC mobile payment to a greater extent if they perceived mobile payment as compatible with their lifestyle. Our research contributes to the understanding of generational patterns of mobile payment acceptance. [ABSTRACT FROM AUTHOR]

The NFC and MIFARE systems (referred to as HF-band RFID) are a special case of Radio Frequency Identification (RFID) technology using a radio frequency of 13.56 MHz for communication. The declared range of such communication is usually several cm and is characterized by the need to bring the data carrier close to the system reader. Due to the possibility of transmitting sensitive data in this type of system, an important problem seems to be the electromagnetic security of the transmitted data between the cards (tags) and the reader and within the system. In most of the available research studies, the security of RFID systems comes down to the analysis of the effectiveness of encryption of transmitted data or testing the range of communication between the reader and the identifier. In this research, however, special attention is paid to the so-called electromagnetic information security without the analysis of cryptographic protection. In some cases (e.g., data retransmission), encryption may not be an effective method of securing data (because, e.g., encrypted data might be used to open and start a car with a keyless system). In addition, the research draws attention to the fact that the data from the identifier can be accessed not only from the identifier, but also from the control system (reader, wiring, controller, etc.) from which the data can be radiated (unintentionally) at a much greater distance than the communication range between the identifier and the reader. In order to determine the security of the transmitted data in the HF-band RFID systems, a number of tests were carried out with the use of specialized equipment. During the measurements, both the data carriers themselves (cards, key fobs, stickers, tags) and exemplary systems for reading data from the media (a writable card reader, a mobile phone with NFC function, and an extensive access control system) were tested. The experiments carried out made it possible to determine the safety of NFC and MIFARE systems during their use and only storage (e.g., the ability to read data from an identification card stored in a pocket). [ABSTRACT FROM AUTHOR]

This study aimed to test the utility of ammonium persulfate (APS) oxidised nanofibrillated cellulose (NFC) as an additive for chitosan- and alginate-based biopolymer films that could eventually be used as paper coatings for food packaging applications. Sodium alginate and chitosan were used as the base for the films. Various concentrations of APS oxidised NFC ranging from 0% to 10% were used as a reinforcing agent, resulting in six combinations of either alginate-NFC or chitosan-NFC composite films. Biofilms were tested for their mechanical properties (tensile strength and strain), grease barrier properties, air permeability, water vapour permeability, and degradation in the soil. Overall, when using the ammonium persulfate oxidation pretreatment method, the best performance of the films was estimated with the addition of 2.5% NFC.

Copyright of Science & Technology of Food Industry is the property of Science & Technology of Food Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Highlights: 1. Novel synthetic biopolymer hydrogels were successfully prepared from pristine poly(ethylene glycol) dimethacrylate (PEGDMA) and nanofibrillated cellulose (NFC) using the photopolymerization method. 2. PEGDMA-NFC biocomposite hydrogel can be developed as an affordable biomaterial for herniated nucleus pulposus substitute, with the potential to meet clinical application standards. Abstract Herniated nucleus pulposus develops when the intervertebral disc portudes through the annulus fibrosus due to the rupture of the annulus fibrosus or a decrease in proteoglycans. Hydrogel implant material can be injected into the disc space to restore disc thickness caused by disc degeneration with minimal invasiveness. This study aimed to characterize poly(ethylene glycol) dimethacrylate-nanofibrillated cellulose (PEGDMA-NFC) in vitro as a potential biomaterial for herniated nucleus pulposus substitute. This study utilized PEGDMA-NFC to treat first-degree herniated nucleus pulposus using the photopolymerization method. PEGDMA was selected because of its hydrophilic ability to produce hydrogel. The addition of NFC to the PEGDMA precursor was expected to show mechanical properties as a hydrogel bio composite candidate. The characterization of PEGDMA-NFC was conducted using three tests: Fourier-transform infrared spectroscopy (FTIR), viscosity assessment, and an in vitro injection testing model. The normal distribution of the data was analyzed using the Kolmogorov-Smirnov test, while the homogeneity was assessed using Levene's test. Homogenous and normally distributed data were analyzed using a one-way analysis of variance (ANOVA) with a p-value of

In the modern times, the heavy footprint of Information and Communication Technologies in the everyday life brings multiple challenges to the ordinary citizen, like having a digital profile on numerous services and institutions. The spread of authentication services that need to be verified to perform simple tasks is thus overwhelming. Many countries hence developed elaborated solutions to unify some of the authentication services around a single e-ID card to help performing different everyday tasks. The burden associated with carrying a smartcard reader to authenticate, or the time spent and complexity of the authentication using Mobile Digital Tokens represent an adversity for citizens who are not so digitally educated. NFC is a technology that is growing in usage every year and is widely adopted now. It is easy and fast to use. This paper proposes a safe, easy, and fast way to implement NFC-based authentication in an e-ID card and discusses its benefits. [ABSTRACT FROM AUTHOR]

The aim of the study is to present the impact of enterprise markups by sections on changes in the CPI in Poland in the years 2008-2023. The VAR model was developed to reveal the interdependencies between changes in markups in nine major sections of non-financial corporations and changes in the CPI. The results of the model, the impulse response function and the variance decomposition confirmed the differentiated impact of markups on inflation changes. To the greatest extent, changes in the CPI, as much as 30%, were explained by the markups of enterprises in real estate services (L), and mining and quarrying (B) sections. The least pro-inflationary contribution to the CPI explanation was shown by markups from information and communication (J), water supply, sewage and waste management, reclamation (E), trade and repair of motor vehicles (G) and the generation and supply of electricity, gas, steam, and hot water D (less than 1%). The degree of explanation of the CPI by markups projected in the variance decomposition increased in the short term (to 26% in the 1st year), stabilizing at a higher level (35% in the years 3-5) in the medium and long term. [ABSTRACT FROM AUTHOR]

Recently, developments in such Near field Communication Technology (NFC) and associated integrated devices have pace out an acceleration the demand of transactions in electronic devices system such wearable readers which have short-power consumption and proficiency in high transferring data. NFC has showed the alternative active key solution to existing smart electronic devices that depend on huge batteries to supply the energy in paying bills though such devices. NFC widely utilized via wireless power transfer, where devices share and connect with each other, to increase the efficiency of transferring data, with high superb properties such as permeability. NFC has emerged as a powerful technology and its apparatus devices. The ongoing of NFC growth could be related to its extensibility and more sustainable. NFC can deliver different shapes at providing software application capabilities to connect with each other. NFCs demonstrates an adaptable method to enhance and offer current elements accessible to applications across the Internet. NFCs are a new fad and modern technology that shares embedded and ubiquitous devices with others, various corporations are finding the advantage by the NFC. This research will propose a formulation technique to explore and adapt an approach of developing and validating the NFC which permits to exchange data via technology wireless (NFC) between the parties. This technique will facilitate the feasibility of having e.g., a system to reduce of losing duration time and cost for users, as well as, an agile technique for validating the suggested approach via Attributed Graph Grammar (AGG) tools.

The emergence of global health crises has emphasised the need for efficient and secure methods to verify the individuals’ vaccination and testing status. The research paper proposes an innovative application of the Radio Frequency Identification technology to develop a comprehensive system that ensures the controlled entry of vaccinated and tested individuals into buildings and extends its use to transportation networks. By combining tags, readers and a centralised database, with the extension of using Message Queuing Telemetry Transport, this solution aims to enhance public health safety, restore confidence in public spaces and optimise transportation operations.

The NFC and MIFARE systems (referred to as HF-band RFID) are a special case of Radio Frequency Identification (RFID) technology using a radio frequency of 13.56 MHz for communication. The declared range of such communication is usually several cm and is characterized by the need to bring the data carrier close to the system reader. Due to the possibility of transmitting sensitive data in this type of system, an important problem seems to be the electromagnetic security of the transmitted data between the cards (tags) and the reader and within the system. In most of the available research studies, the security of RFID systems comes down to the analysis of the effectiveness of encryption of transmitted data or testing the range of communication between the reader and the identifier. In this research, however, special attention is paid to the so-called electromagnetic information security without the analysis of cryptographic protection. In some cases (e.g., data retransmission), encryption may not be an effective method of securing data (because, e.g., encrypted data might be used to open and start a car with a keyless system). In addition, the research draws attention to the fact that the data from the identifier can be accessed not only from the identifier, but also from the control system (reader, wiring, controller, etc.) from which the data can be radiated (unintentionally) at a much greater distance than the communication range between the identifier and the reader. In order to determine the security of the transmitted data in the HF-band RFID systems, a number of tests were carried out with the use of specialized equipment. During the measurements, both the data carriers themselves (cards, key fobs, stickers, tags) and exemplary systems for reading data from the media (a writable card reader, a mobile phone with NFC function, and an extensive access control system) were tested. The experiments carried out made it possible to determine the safety of NFC and MIFARE systems during their use and only storage (e.g., the ability to read data from an identification card stored in a pocket).

Abstract Background In SLE patients, cytokines are linked to endothelial cell damage. Nailfold capillaroscopy (NFC) is a simple method for evaluating micro-vascular abnormalities in different connective tissue diseases (CTDs). The study aimed to detect the levels of interleukin 17A (IL 17A), type I interferons (IFNs I) in the serum, and NFC changes in Egyptian SLE patients compared to a control group and to correlate NFC findings with patients’ demographic features and serum levels of IL 17A and IFNs I. Results Serum levels of IL 17A, IFN α, and IFN β were significantly higher in SLE patients than in control group (P

The intensive development of information and telecommunications technology has a very large impact on society. On the one hand, it greatly facilitates many activities in everyday life, such as searching for information, establishing contacts with other people, or controlling household appliances at a distance. On the other hand, it poses serious threats to our personal data, the information we process, or our property. One of the examples of such threats may be radio identification systems, enabling the registration of working time, entry into restricted zones in workplaces and offices, or warehouse data. Copying data from an identification card may allow unauthorized persons access to premises and data that they should not have. The article presents the principles of operation, the results of the conducted research, and their analysis in the aspect of security of the short-range radio frequency identification systems used in relation to the RFID 125 kHz system, broadly used in access control systems or time and attendance systems. Particular attention has been paid to the possibility of unauthorized acquisition of information contained in the identification card in order to, for example, copy it and gain access to specific protected zones. An analysis of the security of such systems was carried out not only in relation to the data carriers themselves but also to complete access control systems installed in buildings. The research focused especially on the ability to determine the range of information penetration, i.e., the distance of remote information acquisition using electromagnetic radiated emissions. [ABSTRACT FROM AUTHOR]

Daily digital payments in Financial Technology (FinTech) are growing exponentially. A huge demand is for developing secure, lightweight cryptography protocols for wearable IoT-based devices. The devices hold the consumer information and transit functions in a secure environment to provide authentication and confidentiality using contactless Near-Field Communication (NFC) or Bluetooth technologies. On the other hand, Security breaches have been observed in various dimensions, especially in wearable payment technologies. In this paper, we developed a threat model in the proposed framework and how to mitigate these attacks. This study accepts the three-authentication factor, as biometrics is one of the user’s most vital authentication mechanisms. The scheme uses an “Elliptic Curve Integrated Encryption Scheme (ECIES)”, “Elliptic Curve Digital Signature Algorithm (ECDSA)” and “Advanced Encryption Standard (AES)” to encrypt the messages between the entities to ensure higher security. The security analysis of the proposed scheme is demonstrated through the Real-or-Random oracle model (RoR) and Scyther’s widely accepted model-checking tools. Finally, we present a comparative summary based on security features, communication cost, and computation overhead of existing methods, specifying that the proposed framework is secure and efficient for all kinds of remote and proximity payments, such as mini, macro, and micro-payments, using wearable devices.

Background: In SLE patients, cytokines are linked to endothelial cell damage. Nailfold capillaroscopy (NFC) is a simple method for evaluating micro-vascular abnormalities in different connective tissue diseases (CTDs). The study aimed to detect the levels of interleukin 17A (IL 17A), type I interferons (IFNs I) in the serum, and NFC changes in Egyptian SLE patients compared to a control group and to correlate NFC findings with patients' demographic features and serum levels of IL 17A and IFNs I. Results: Serum levels of IL 17A, IFN α, and IFN β were significantly higher in SLE patients than in control group (P < 0.0001). About thirty nine patients (73.6%) of the 53 SLE patients showed abnormal NFC changes. Egyptian SLE patients had a high prevalence of the NFC non-specific pattern, with 32 (60.4%) patients showing non-specific changes and 7 (13.2%) patients showing scleroderma pattern, including 3 (5.6%) patients with active scleroderma pattern and 4 (7.55%) patients with late scleroderma pattern. Furthermore, Raynaud's phenomenon (RP) was observed in 8 (15.1%) SLE patients, with 3 (5.6%) having normal NFC pattern and 5 (9.4%) having scleroderma pattern. All controls (n = 20) showed normal hairpin shape capillaries. Except for SLEDAI (P = 0.03) and the presence of RP (P < 0.0001), there were no significant differences in demographic and laboratory parameters between the three NFC patterns (normal, non-specific, and scleroderma); additionally, NFC score correlated significantly with SLEDAI (P = 0.021). Conclusion: As a result of the high disease activity, Egyptian SLE patients had elevated serum levels of IL 17A and IFNs I. The most common NFC pattern in Egyptian SLE patients was a non-specific pattern. NFC abnormalities in Egyptian SLE patients were correlated with disease activity but not with patients' ages, disease duration, or serum levels of IL 17A and IFNs I. SLE patients with scleroderma NFC pattern and RP should be closely followed for the possibility of appearance of anti-U1 RNP antibodies and MCTDS. [ABSTRACT FROM AUTHOR]

Antibiotic-loaded bone cement (ALBC) has become an indispensable material in orthopedic surgery in recent decades, owing to the possibility of drugs delivery to the surgical site. It is applied for both infection prophylaxis (e.g., in primary joint arthroplasty) and infection treatment (e.g., in periprosthetic infection). However, the introduction of antibiotic to the polymer matrix diminishes the mechanical strength of the latter. Moreover, the majority of the loaded antibiotic remains embedded in polymer and does not participate in drug elution. Incorporation of the various additives to ALBC can help to overcome these issues. In this paper, four different natural micro/nanoscale materials (halloysite, nanocrystalline cellulose, micro- and nanofibrillated cellulose) were tested as additives to commercial Simplex P bone cement preloaded with vancomycin. The influence of all four materials on the polymerization process was comprehensively studied, including the investigation of the maximum temperature of polymerization, setting time, and monomer leaching. The introduction of the natural additives led to a considerable enhancement of drug elution and microhardness in the composite bone cements compared to ALBC. The best combination of the polymerization rate, monomer leaching, antibiotic release, and microhardness was observed for the sample containing nanofibrillated cellulose (NFC). [ABSTRACT FROM AUTHOR]

Copyright of Investigación e Innovación en Ingenierías is the property of Universidad Simon Bolivar and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A key is a tool made of metal to open or fasten a door or object that has a lock by inserting it into the hole in the main key. The lock itself is usually used on doors, suitcases, or other objects that require security. The lock on the suitcase itself still has a slight variation and there are still weaknesses, for example the code lock if you forget it cannot be opened, then the padlock and slot lock if the key is lost cannot be opened and can still be broken into by lockpick. The type of research carried out is included in the type of research and development (Research and Development). So, from these problems, a system will be designed and built that can monitor and maximize security automatically so that user's goods are protected from crime or theft by utilizing Near Field Communication (NFC), Global Positioning System (GPS), Magnetic Sensors and Microcontrollers. This system is made portable, so that it can be used in various goods with certain conditions, for example suitcases. The results of this research are portable lock tools, and applications that can integrate lock tools in real time. From the test results obtained accuracy on the gps key, and the security system can run according to the program.

The Electronic government system in Egypt faces great challenges during its current phase of development and implementation. These challenges are due to the emergence of new technologies and applications in the field of government electronic services. New technologies such as Near-Field Communications NFC, Smart Cities, and Green Information Technology for preserving the environment have contributed to new principles and procedures for the E-Government system in Egypt. This Research aims at developing an initiative for the Egyptian Government System through developing an integrated and systematic plan for defining priorities of engaging above-mentioned modern technologies to be applied in the next phase of development and implementation. The government body responsible for this work is the Ministry of Administrative Development. [ABSTRACT FROM AUTHOR]

A significant mechanical properties mismatch between natural bone and the material forming the orthopedic implant device can lead to its failure due to the inhomogeneous loads distribution, resulting in less dense and more fragile bone tissue (known as the stress shielding effect). The addition of nanofibrillated cellulose (NFC) to biocompatible and bioresorbable poly(3-hydroxybutyrate) (PHB) is proposed in order to tailor the PHB mechanical properties to different bone types. Specifically, the proposed approach offers an effective strategy to develop a supporting material, suitable for bone tissue regeneration, where stiffness, mechanical strength, hardness, and impact resistance can be tuned. The desired homogeneous blend formation and fine-tuning of PHB mechanical properties have been achieved thanks to the specific design and synthesis of a PHB/PEG diblock copolymer that is able to compatibilize the two compounds. Moreover, the typical high hydrophobicity of PHB is significantly reduced when NFC is added in presence of the developed diblock copolymer, thus creating a potential cue for supporting bone tissue growth. Hence, the presented outcomes contribute to the medical community development by translating the research results into clinical practice for designing bio-based materials for prosthetic devices. [ABSTRACT FROM AUTHOR]

The possible usage of natural fiber reinforced composites (NFC) for various industrial applications is being explored. In the present work, mechanical and wear behavior of three different NFCs were analyzed. Natural fibers like prosopis juliflora (PJ), abuliton indicum (AI), and tapsi (T) fibers in the form of straws were considered in the present study. Composites were fabricated for three different fibers with 20 wt.% by hand layup method. Mechanical tests like tensile, flexural, and impact were performed along with tribological tests. Tensile and flexural were performed on universal testing machine, impact on izod impact tester, and wear test on pin-on-disc test setup. Wear tests on the fabricated composite samples were performed with varying the process parameters like sliding speed and applied load with a maximum sliding distance of 3000 m. SEM analysis was also performed on the fractured and worn out samples to know the bonding behavior, failure, and material removal mechanism of three NFCs. Among all the NFCs, prosopis juliflora fiber attained an improved mechanical and wear behaviors when contrasted to the other two NFCs.

This paper suggests a new business model based on modern technology for retail. In the age of digitalization, stationary retail is losing market shares to online retail. Therefore, there is an obvious need for change in businesses. The concept developed in this paper combines the strengths of online and stationary retail to benefit stationary retail. In the approach taken in this paper, the basis for change is modern technology. Finding innovative ways to use technologies like NFC, AI, and robotics is regarded as the key factor to sustainable success. As the implementation of modern technologies entails a particular investment, the customers’ opinion on structural changes like these has been included in the consideration. Therefore, a survey has been conducted to find out which level of innovation current customers are willing to accept thus emphasizing the need for certain changes and dissuading specific others. The result of this paper is the modern showroom concept which takes the customers’ opinion into account while implementing the right amount of technology that should pave the way to a sustainable future for stationary retail.

Transportation is currently an unavoidable necessity. However, the COVID-19 pandemic has impacted all lines of industry, including the Indonesian aviation transportation industry. Technology is one of the solutions to deal with these problems. The monitoring system of masked face recognition and body temperature detection for the check-in process of passengers at the airport is aimed to be developed in this research. The contribution of this research is that the system can distinguish the type of face mask used. Therefore, this monitoring system classified only medical masks and N95/KN95 respirator masks as ‘Good Masked’. IP camera and thermal camera are used to identify a masked face and body temperature, respectively. The sensor fusion method was used for decision-making on passengers whether they can be departed or not. The decision was taken based on the measured body temperature, the use of standardized face masks, and the face recognition of the airport passengers. Convolutional neural network (CNN) method was used for face and face mask recognition. The CNN model training was conducted four times according to the four proposed scenarios. The CNN model that has been trained can distinguish a masked face and a face without a mask. The best results were obtained in the fourth scenario with the comparison of the training dataset to the testing dataset was 9:1 and the epoch was 500 times. The basic deep learning model used for face detection was the single shot multibox detector (SSD) using the ResNet-10 architecture. Meanwhile, the CNN method with the MobileNetV2 architecture was used to detect the use of masks. The accuracy of the CNN model for face recognition and mask recognition was 100%. All check-in monitoring and verification process data were displayed on the web application which was built on the localhost.

NFC (Near Field Communication) es una tecnología innovadora, flexible y relativamente económica para la intercomunicación de los dispositivos mecatrónicos tanto fijos como móviles. Una de las características principales que lo distingue de tecnologías similares es su capacidad de comunicación bidireccional, es decir, puede enviar y recibir información de una fuente externa, esto abre muchas posibilidades para aplicaciones relacionadas a credenciales y transacciones. En este trabajo nos fundamentamos en crear una aplicación web que pueda aprovechar las capacidades de esta tecnología, para ofrecer una plataforma digital web que permita realizar funciones de identificación y transacciones comunes dentro de una organización. Esta plataforma tiene la intención de crear un ecosistema que incentive la utilización del carnet estudiantil dentro del campus de la Universidad Tecnológica de Panamá, ofreciendo funcionalidades de verificación de credenciales para aumentar la seguridad dentro del área de la institución; funcionalidades como opción alterna de pago para acelerar los procesos repetitivos relacionados con pagos internos, que muchas veces son ineficientes por el factor humano dentro del proceso. Se espera que la comparación de los modelos en este proyecto demuestre que utilizando un sistema digital e innovador se podría disminuir considerablemente el tiempo en espera promedio de los usuarios que realizan procesos de pagos dentro de la Universidad Tecnológica de Panamá, así como cualquier otra institución.

Food traceability is a fundamental requirement for the agriculture of the future. A food traceability system should ensure food safety and quality control, allow authentication, fraud prevention and control by the authority, improve consumers’ safety and confidence. The agri-food supply chain is complex and difficult to handle due to the presence of various stakeholders and control authorities. Consequently, the complexity and the cost of traceability systems make it inapplicable for small and medium enterprises (SMEs). This work defines of a food traceability system using existing low cost digital technologies with the possibility to be integrated into a database for public authority controls. Smartphone applications allow consumer involvement and a bidirectional interaction between the company and the consumer. This work proposes the use of smartphone with NFC technology in every phase of the food chain bringing the information to the final consumer. An advantage of the proposed system is the low cost and easy to use, allowing its diffusion in small and micro farms, regional typical products, bio productions. The applications developed and the database architecture have been customized to the extra virgin olive oil process. Final considerations evidence the economic advantage of the traceability system.

This study aims to investigate the perceptions of near-field communication (NFC) usage for mobile payments in Saudi Arabia. In order to develop a mathematical framework for the acceptance of NFC quality of information for mobile payments, researchers have combined the technological acceptance model (TAM) and the idea of perceived risk. An online and physical study of 1217 NFC portable credit card holders in Saudi Arabia was conducted. Exploratory and confirmatory analyses were utilized to analyze the factor structure of the measurement items, and Smart PLS 2.0 from structural equation modeling (SEM) was used to assess the theories and hypotheses that had been put forth. The results show that (1) social influence, perceived element of risk, and subjective norms each have a negative influence on preconceptions of trust in online payment methods using NFC; (2) social influence, perceived element of risk, and social norms all have a positive effect on satisfaction with the security of electronic payment using NFC; (3) perceived ease of use has a negative effect on perceived confidence in digital payment using NFC; and (4) perceived ease of use has a negative effect on perceived trust in online payment using NFC. As a consequence of these findings, users' attitudes regarding the use of NFC and behavioral intentions to utilize NFC mobile payment can be revealed. This study created a unique approach for assessing perceptions, perceived trust, and NFC information quality in mobile payment uptake in Saudi Arabia. As a consequence, banks may find this research useful as they implement new strategies to attract more customers, such as perceived security, brand trust, and NFC information quality in mobile payment adaption. [ABSTRACT FROM AUTHOR]

The COVID-19 pandemic has had a profound impact on payment systems and preferences around the world, reducing the use of cash in favor of digital payment instruments and accelerating the discussion around the need for a central bank digital currency. This article presents the digital payments and cashless agenda before and after the pandemic, focusing on how the changing payments landscape has influenced the priorities and decisions of regulators, banks and other financial intermediaries, with regards to the future shape of payment systems. It finds that while the pandemic demonstrated the benefits associated with building an advanced, competitive and integrated digital payments eco-system, it has also brought to the forefront more fragmentation than convergence between payment systems in different regions of the world. [ABSTRACT FROM AUTHOR]

RFID systems are one of the essential technologies and used many diverse applications. The security and privacy are the primary concern in RFID systems which are overcome by using suitable authentication protocols. In this manuscript, the costeffective RFID-Mutual Authentication (MA) using a lightweight Extended Tiny encryption algorithm (XTEA) is designed to overcome the security and privacy issues on Hardware Platform. The proposed design provides two levels of security, which includes secured Tag identification and mutual authentication. The RFIDMA mainly has Reader and Tag along with the backend Server. It establishes the secured authentication between Tag and Reader using XTEA. The XTEA with Cipher block chaining (CBC) is incorporated in RFID for secured MA purposes. The authentication process completed based on the challenge and response between Reader and Tag using XTEA-CBC. The present work is designed using Verilog-HDL on the Xilinx environment and implemented on Artix-7 FPGA. The simulation and synthesis results discussed with hardware constraints like Area, power, and time. The present work is compared with existing similar approaches with hardware constraints improvements.

Purpose: The main aim of this study is to review some widespread wireless technologies and the possible dimensions of their operation in the commercial business. Methods: The paper uses general and specific methods such as the descriptive method, situational and content analysis. Results: Wireless technologies are becoming a mandatory element in various situations of personal and business life. Their role is growing both in terms of information and communication exchange, but also in relation to the creation of new application areas for their use in business. Each wireless technology has certain physical specifics and characteristics that predetermine the field for their successful implementation and usefulness in trade. Conclusions: In the commercial business, wireless data and information transmission is a technological factor in accelerating the economic process and is an integral part of the digital transformation in the implementation of product exchange in both traditional physical and online store environments.

This study was carried out to compare the individual and combined effects of nanolignocelluloses (NLC), cationic polyacrylamide (CPAM), cationic starch (CS) and imported chemical long fiber (LF) in the manufacture of recycle liner and fluting paper for packaging. Individual treatments of OCC were included 15% LF, 6% NLC, 1.5% CS and 0.15% CPAM as addetives. Combined treatments were included 6% NLC and 1.5% CS, 6% NLC and 0.15% CPAM. Handsheets were made with grammage of 127 g/m2 by application the mentioned treatments. Finally, the physical, mechanical properties and microscopic structure of handsheet were investigated. The results showed that addition of LF and NLC caused the density of handsheets decreased compared to the control. The individual and combined treatments led to increasing the tensile and burst strength of handsheet. Also, the tear strength of handsheet increased compared to the control except for the combined treatment of NLC and CS. FE-SEM images showed pores relative reduction in handsheet that prepared from combination treatments. It showed negative effect on water drainage. The addition of 6% NLC and 0.15% CPAM to OCC pulp resulted in the highest crush strengths as RCT and CMT compared to the control. SEM micrographs showed relatively reduced pores in handsheets prepared from combined treatments, which could have negative effect on the dewatering of OCC pulp. [ABSTRACT FROM AUTHOR]

This paper is focused on Near-Field Communication (NFC), which is one of the most popular wireless communication. Although the NFC was developed in recent years, it is inseparable part of the everyday activities. NFC antenna is the key element for the realization of the NFC. This paper deals with the design of the miniaturized NFC antenna. Basic equations for coil inductance calculation, which are necessary for the NFC antenna design are presented as well. This paper also focuses on the influence of the coil’s aspect ratio to its inductance. The aim of this paper was the optimization of the NFC antenna dimensions. NFC antenna dimensions were calculated according to dimension of microcontroller Printed Circuit Board (PCB), so the antenna can be laminated directly to microcontroller PCB.

Abstract This paper gives an overview of optimizing wireless power transfer systems using magnetic coupling. Optimization aims to maximize either the power transfer efficiency or the transferred power. The resulting load calculation and matching strategies are revisited. Moreover, the coupling system is described, starting with its equivalent circuit and scattering parameters. In addition to wireless power transfer, communication in RFID and NFC systems and its frequency characteristics and bandwidth issues are highlighted. The focus in this paper is on load modulation for data transfer between a tag and reader. For this purpose, subcarrier voltages are derived using time-domain as well as frequency-domain signal analysis.

The complex and demanding environments of high humidity, heat, altitude, and intricate electric fields necessitate higher standards for the mechanical, thermal stability, and electric insulation properties of insulating paper. However, a single nanomaterial alone struggles to enhance overall performance. Hence, we propose employing two-phase nanomaterials with distinct dimensions to synergistically enhance the performance of cellulose insulation paper. Accordingly, "simulation design directly guided experimental research" was utilized in constructing nano-BN/nanocellulose/cellulose (nano-BN/NFC/cellulose) models through molecular dynamics simulation, and its mechanical parameters, dielectric properties, thermal stability, and so on were simulated and calculated. Based on simulation results, suitable proportions of nano-BN/NFC/cellulose insulating paper were prepared. Nano-BN and NFC synergistically enhance the mechanical properties of insulating paper. The nano-BN, CNF, and cellulose are arranged layer by layer under the action of gravity, allowing the fillers to overlap diagonally along the plane, synergistically forming a thermally conductive network conducive to heat transfer. Additionally, a strong interfacial effect is formed between the three-phase materials, reducing the overall structure's polarization effect and charge accumulation, and synergistically enhancing electrical insulation performance. The 12%nano-BN/NFC/cellulose (P12) exhibits optimal overall performance and is expected to be used in power equipment operating in special environments with high humidity and heat. [Display omitted] • The results of MD simulations successfully guided the preparation of nano-BN/NFC/cellulose insulating paper. • Nano-BN and NFC synergistically enhance the mechanical, thermal, and electrical properties of cellulose insulating papers. • The P12 insulating paper possesses a high thermal conductivity of 0.286 W/(m·K) and a T g of 140.2 °C. • The P12 with high tensile stress (68.93 MPa), volume resistivity (4.79 × 1015 Ω m), and breakdown strength (67.48 kV mm−1). [ABSTRACT FROM AUTHOR]

Wearable technologies are becoming pervasive in our society, and their development continues to accelerate the untapped potential of continuous and ubiquitous sensing, coupled with big data analysis and interpretation, has only just begun to unfold. However, existing wearable devices are still bulky (mainly due to batteries and electronics) and have suboptimal skin contact. In this work, we propose a novel approach based on a sensor network produced through inkjet printing of nanofunctional inks onto a semipermeable substrate. This network enables real-time monitoring of critical physiological parameters, including temperature, humidity, and muscle contraction. Remarkably, our system operates under battery-free and wireless near-field communication (NFC) technology for data readout via smartphones. Moreover, two of the three sensors were integrated onto a naturally adhesive bioinspired membrane. This membrane, developed using an eco-friendly, high-throughput process, draws inspiration from the remarkable adhesive properties of mussel-inspired molecules. The resulting ultra-conformable membrane adheres effortlessly to the skin, ensuring reliable and continuous data collection. The urgency of effective monitoring systems cannot be overstated, especially in the context of rising heat stroke incidents attributed to climate change and high-risk occupations. Heat stroke manifests as elevated skin temperature, lack of sweating, and seizures. Swift intervention is crucial to prevent progression to coma or fatality. Therefore, our proposed system holds immense promise for the monitoring of these parameters on the field, benefiting both the general population and high-risk workers, such as firefighters. • Multi-sensor wearable system fabricated with consumer inkjet printing of AgNPs. • Nature-inspired bio-adhesive membranes for 2D wearables integration on the skin. • Battery-free and wireless NFC communication to smartphone for data readout. • Temperature, humidity and body movements recorded with NFC chips in real-time. • In vivo validation of the NFC multi-sensor system for physical exercise. [ABSTRACT FROM AUTHOR]

The development of microelectronics has been achieved by improving its performance through miniaturization. This was possible through the development of silicon-based semiconductor process technology, but recently, the demand for wearable or flexible devices has increased. These devices are made using various functional elements based on materials that are difficult to utilize with semiconductor devices that contain existing hard silicon-based materials and are bent or flexibly stretched. In this study, wireless antennas suitable for wearable devices were implemented in a stretchable form. It was possible to stably receive a wireless signal, even with a strain of 20% or more, and power light-emitting diodes (LEDs), microheaters, etc. By devising a multi-layered stack antenna without the existing semiconductor process, it was possible to improve the antenna's reception performance. It is expected that this can be applied in various ways to smart wireless sensors and wearable biomedical devices using the near-field communication (NFC) of smartphones. [ABSTRACT FROM AUTHOR]

A complete and thorough understanding by patients of their prescriptions is one of the most critical components of a successful treatment journey. Being unfamiliar with the intricacies of prescribed medication can cause serious health risks due to not adhering to prescription instructions or noting potential drug interactions, which can lead to life-threatening injuries. Pharmacists face communication barriers (including non-English speaking patients), lack of time, lack of knowledge, workload, and frequent interruption when dispensing medicines often preventing them from providing the necessary guidance to their patients. To minimize this risk, an NFC-Guidable polypharmacy system was developed integrating Near Field Technology (NFC) into prescription packages. The intention being, to automate prescription identification for elderly patients in hospitals and primary health care (PHC) centers where Arabic is their native language and patients have five or more prescriptions at a time. The system provides prescription information such as name, expiration date based on the Islamic calendar, appropriate dosage, the correct time for a dose, contraindication, and other relevant instructions in Arabic. The objectives of the system are to improve patient safety and enhance the quality of prescription dispensing for elderly and non-English speaking patients. An evaluation study with polypharmacy elderly patients and pharmacists is conducted to understand the perception and acceptance of the system by both groups. The strengths and weaknesses of the system as well as suggestions for improvement from participants were also gathered. The study results indicate that the system helps patients to avoid misuse of sensitive medication and authenticates their prescribed prescription drugs before taking them. The system also assists pharmacists in improving the efficiency of dispensing medication and streamline processes. Overall, the application was well received by both patients and pharmacists. Thus, NFC technology should be integrated into the healthcare sector to overcome language barriers, the lack of specialized medication labels for illiterate or patients with sight constraints as well as unreasonable expectations placed on pharmacists. [ABSTRACT FROM AUTHOR]

Thin-film microdevices can be applied to various wearable devices due to their high flexibility compared to conventional bulk-type electronic devices. Among the various microdevice types, many IoT-based sensor devices have been developed recently. In the case of such sensor elements, it is important to control the surrounding environment to optimize the sensing characteristics. Among these environmental factors, temperature often has a great influence. There are cases where temperature significantly affects the sensor characteristics, as is the case for gas sensors. For this purpose, the development of thin-film-type micro-heaters is important. For this study, a wirelessly driven thin-film micro-heater was fabricated on the flexible and stretchable elastomer, a polydimethylsiloxane (PDMS); the antenna was optimized; and the heater was driven at the temperature up to 102 degrees Celsius. The effect of its use on gas-sensing characteristics was compared through the application of the proposed micro-heater to a gas sensor. The heated SnO2 nanowire gas sensor improved the performance of detecting carbon monoxide (CO) by more than 20%, and the recovery time was reduced to less than half. It is expected that thin-film-type micro-heaters that can be operated wirelessly are suitable for application in various wearable devices, including those for smart sensors and health monitoring. [ABSTRACT FROM AUTHOR]

Recent advances in materials, mechanics, and electronic device design are rapidly establishing the foundations for health monitoring technologies that have "skin-like" properties, with options in chronic (weeks) integration with the epidermis. The resulting capabilities in physiological sensing greatly exceed those possible with conventional hard electronic systems, such as those found in wrist-mounted wearables, because of the intimate skin interface. However, most examples of such emerging classes of devices require batteries and/or hard-wired connections to enable operation. The work reported here introduces active optoelectronic systems that function without batteries and in an entirely wireless mode, with examples in thin, stretchable platforms designed for multiwavelength optical characterization of the skin. Magnetic inductive coupling and near-field communication (NFC) schemes deliver power to multicolored light-emitting diodes and extract digital data from integrated photodetectors in ways that are compatible with standard NFC-enabled platforms, such as smartphones and tablet computers. Examples in the monitoring of heart rate and temporal dynamics of arterial blood flow, in quantifying tissue oxygenation and ultraviolet dosimetry, and in performing four-color spectroscopic evaluation of the skin demonstrate the versatility of these concepts. The results have potential relevance in both hospital care and at-home diagnostics.