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Financial inclusion has been defined and understood primarily in terms of access, thereby constituting ‘inclusion’/‘exclusion’ as a binary. This paper argues such a view to be myopic that risks treating financial inclusion as an end in itself, and not as means to a larger end. ‘Access’ oriented perspectives also fail to take into account considerations of structural factors like power asymmetries and pay inadequate attention to user practices. Through the case of auto-rickshaw drivers in Bangalore, India, and their use of Ola, a peer-to-peer taxi hailing service similar to Uber, we show that access is a necessary, but not sufficient condition to achieve financial inclusion in a substantive sense. By examining in detail, the financial needs and practices of rickshaw drivers, we identify the opportunities and constraints for digital technology to better support their financial practices and enhance their wellbeing. The paper proposes adding ‘autonomy’ and ‘affordances’ as two crucial factors to be included in the discourse on financial inclusion. Finally, we outline design implications for P2P technologies to contribute towards the financial inclusion of drivers.

We describe the design of a novel mobile phone-based application for loan management in a resource-constrained setting. In this setting, a social enterprise manages auto-rickshaw loans for drivers, taking charge of collections. The design was informed by an ethnographic study which revealed how loan management for this financially vulnerable population is a daily struggle, and loan payment is a collaborative achievement between collectors and drivers. However, drivers and collectors have limited resources to-hand for loan management. To address this, we designed Prayana, an intermediated financial management app. Prayana shares the principles of many persuasive technologies, such as education, motivation, and nudges, but is designed for users with a range of print, technical, and financial literacies and embodies the core design sensibility of enhancing users' agency. Furthermore, it does not put the onus solely on drivers to better manage their money, instead it aims to enhance the collaborative work of loan management, supporting both the drivers and collectors.

Early reactions to the publication of Harold Garfinkel’s Studies in Ethnomethodology, which have persisted over the passing decades, was that ethnomethodology could not address what sociology deemed to be socially significant matters such as ‘power’ and ‘the state’. This, however, is not the case. How such matters enter into the practical everyday affairs of members is of equal interest to ethnomethodology when compared to how any matter enters into members’ everyday life, and how they display that. It just does not have more importance. Egon Bittner spelt this out with regard to Weber’s interest in bureaucracy when he reminds sociology that when Weber talked about efficiency he was not referring to an objective standard but as something that is attuned to practical interests as they emerge in the context of everyday life. This paper examines some of the actions and interactions that were encountered in a Governmental Department in one of the European countries. It makes visible how characterisations of bureaucracy such as ‘rational’, and ‘efficient’ are achieved in the actions and interactions of Department employees, and some of the practices involved in that achievement. Garfinkel, and ethnomethodology in general, are not, in principle, to be found wanting where matters of overarching, primordial interest to sociology are concerned.

This paper describes a tool for assisting lawyers and paralegal teams during document review in eDiscovery. The tool combines a machine learning technology (CategoriX) and advanced multi-touch interface capable of not only addressing the usual cost, time and accuracy issues in document review, but also of facilitating the work of the review teams by capitalizing on the intelligence of the reviewers and enabling collaborative work.

When faced with anything out of the ordinary, faulty or suspicious, the work of determining and categorizing the trouble, and scoping for what to do about it (if anything) often go hand in hand--this is diagnostic work. In all its expert and non-expert forms diagnostic work is often both intellectual and embodied, collaborative and distributed, and ever more deeply entangled with technologies. Yet, it is often poorly supported by them. In this special issue we show that diagnostic work is an important and pervasive aspect of people's activities at work, at home, and on the move. The papers published in this Special Issue come from a range of domains including, ambulance dispatch, a friendly fire incident and anomaly response for the NASA space shuttle; software, network and photocopier troubleshooting; and users attempting to use a new travel management system. These papers illustrate the variety of work that may be thought of as diagnostic. We hope that bringing a focus on diagnostic work to these diverse practices and situations opens up a rich vein of inquiry for CSCW scholars, designers, and users.

With the wide penetration of mobile internet, social networking (SN) systems are becoming increasingly popular in the developing world. However, most SN sites are text heavy, and are therefore unusable by low-literate populations. Here we ask what would an SN application for low-literate users look like and how would it be used? We designed and deployed KrishiPustak, an audio-visual SN mobile application for low-literate farming populations in rural India. Over a four month deployment, 306 farmers registered through the phones of eight agricultural mediators making 514 posts and 180 replies. We conducted interviews with farmers and mediators and analyzed the content to understand system usage and to drive iterative design. The context of mediated use and agricultural framing had a powerful impact on system understanding (what it was for) and usage. Overall, KrishiPustak was useful and usable, but none-the-less we identify a number of design recommendations for similar SN systems.

Part 1: Long and Short Papers (Continued); International audience; New technologies do not always benefit the worker, especially when harnessed by organisations seeking ever cheaper labour. Crowdsourcing is a technology-enabled way of working which offers the potential to bring work to far flung communities. However, it is something of a double-edged sword and there are many socio-technical and ethical challenges. In the micro-task market crowdsourcing platforms tend to be designed largely for the advantage of the organisation requesting work, rather than the worker. This paper contributes to research calling to redress this balance [2, 6]. It describes the findings of an ethnographic study of an outsourced business process – healthcare form digitization – as performed by workers in-office (India) and @Home (USA). It reveals the complexities of the relationships between worker and organisation and argues that designing some aspects of these relationships into crowdsourcing platforms and applications is as beneficial for the organisation as it is for the worker.

We are interested in developing tools to support the activities of lawyers in corporate litigation. In current applications, information such as characters that have played a significant role in a case, events in which they have participated, people they have been in contact, etc., have to be manually identified. There is little in the way of support to help them identify the relevant information in the first place. In this paper, we describe an approach to semi-automatically extracting such information from the collection of documents the lawyers are searching. Our approach is based on Natural Language Processing techniques and it enables the use of entity related information corresponding to the relations among the key players of a case, extracted in the form of events.

This paper describes a novel query suggestion tool we have designed and implemented to help users of office printing devices better formulate their queries, while searching a troubleshooting knowledge base provided as a service on the device itself. The paper traces the main motivations of the design of the query suggestion tool and outlines its technical details with an emphasis on its combination of features in relation to prior work.

The workshop examines aesthetics-in-action through naturalistic studies focusing on the role of technology in artistic composition-production, performance, consumption, aimed at creating a body of knowledge to inform innovative technology design.

Technical troubleshooting is a domain that has changed enormously in recent years. Instead of relying on visits from service personnel end users facing technical problems with machinery, for example computers and printers, can now seek assistance from systems that guide them toward an autonomous solution of the problem. Systems that can be offered to them are wide in their range, but typically fall either in the category of Expert Systems or searchable databases that can be queried with keyword searches. Both approaches present advantages and disadvantages in terms of flexibility to address different levels of user expertise and ease of maintenance. However, few studies explicitly address the issue of how best to design for a balance between guidance and user freedom in such systems. In the work reported here an office equipment manufacturer’s call centre was studied in order to understand the mechanisms used when human agents guide users toward a resolution. The overall aim here is not to reproduce the agent behaviour in a system, but rather to identify which interactional building blocks such a system should have. These are assessed in relation to the existing online knowledge base resources offered by the same company in order to exemplify the kinds of issues designers need to attend to in this domain.

Part 5: Personalisation and Visualisation; International audience; We introduce the grab 'n' drop toolglass, an extension of the toolglass bi-manual interaction technique. It enables users to create and configure their own toolglasses from existing user interfaces that were not designed for toolglasses. Users compose their own toolglass interactions at runtime from an application's user interface elements, bringing interaction closer to the objects of interest in a workspace. Through a proof-of-concept implementation for Mac OS X, we show how grab 'n' drop capabilities could be added to existing applications at the toolkit level, without modifying application source code or UI design. Finally, we evaluate the power and flexibility of this approach by applying it to a variety of applications. We further identify limitations and risks associated with this approach and propose changes to existing toolkits to foster such user-reconfigurable interaction.

Part 5: Case Studies; International audience; This work discusses the affordances of the textbook in current classroom scenarios, and identifies the need to design learning media that support dynamism and enaction, specifically in science education. We illustrate this by a learning tool we’ve developed - Vector canvas, an AR based application linked with the textbook and the curricula. This is a work in progress attempting to observe and articulate changes in learning practice brought by introducing mixed media.

This paper describes our research investigating the perception of difficulty in video games, defined as players’ estimation of their chances of failure. We discuss our approach as it relates to psychophysical studies of subjective difficulty and to cognitive psychology research into the overconfidence effect. The starting point for our study was the assumption that the strong motivational pull of video games may lead players to become overconfident, and thereby underestimate their chances of failure. We design and implement a method for an experiment using three games, each representing a different type of difficulty, wherein players bet on their capacity to succeed. Our results confirm the existence of a gap between players’ actual and self-evaluated chances of failure. Specifically, players seem to underestimate high levels of difficulty. The results do not show any influence on difficulty underestimation from the players gender, feelings of self-efficacy, risk aversion or gaming habits.

Part 1: Adaptive Design and Mobile Applications; International audience; As new technologies emerge, so do new ways of interacting with the digital domain. In this paper, the touch interaction paradigm is challenged for use on large touch displays of 65 in. in size. We present a gesture elicitation study with 26 participants carried out on twelve actions commonly used on touch displays. The results and analysis of 312 touch gestures revealed agreement rates for each action. We report several findings including the results of a set of ten unique (and a few secondary) gestures, a taxonomy classifying the defined gestures, a pilot study on the defined gestures, and explicit design implications. We discuss the results and include several important factors for future considerations. We aim at helping future designers and engineers to design interactions for large touch displays.

Part 8: Interactive Posters; International audience; Amazon recently opened its first intelligent retail store, which captures shopper movements, picked-up products and much more sensitive data. In this paper we present a privacy UI, called URetail, that returns to the customer control over his own data, by offering an interface to select which of his private data items should be disclosed. We use a radar metaphor to arrange the permissions with ascending sensitivity into different clusters, and introduce a new multi-dimensional form of a radar interface called the privacy pyramid. We conducted an expert interview and a pilot study to determine which types of data are recorded in an intelligent retail store, and grouped them with ascending sensitivity into clusters. A preliminary evaluation study shows that radar interfaces have their own strengths and weaknesses compared to a conventional UI.

Part 2: Methods and Tools for User Interface Evaluation; International audience; Worth Maps (WMs) are promising because they model interactive systems following different perspectives. Consequently, WMs support design in many ways. ARROW was introduced to provide designers with a systematic approach to worth mapping. However, the framework currently remains untested, which raises open questions about general applicability and relevance. In this work, we operationalize ARROW in additional design cases. With insights gained from the operational experience, we propose ARROWS (for ARROW-Support) as a refinement of the initial framework. ARROWS was assessed via a workshop with designers. Results highlight the need for appropriate resources supporting worth mapping. In order to fulfill this need, we have created and released a website providing designers with knowledge on ARROWS and WMs that follows a more practically oriented perspective.

Part 6: Courses; International audience; Involving a wide variety of end users and in particular those with a disability or who are older when designing web pages and apps requires a good understanding of how to involve those end users, assistive technology, and evaluation methods. This course will introduce the basics of assistive technologies built into using mobile phones and describe major barriers in web pages, and how to analyze them with end users. It will also outline a range of appropriate tools to use in this work.

Part 5: Case Studies; International audience; This paper presents a case study on the design of spatiotemporal interactive visualizations of movies, both collections and contents, to provide enhanced support for conveying meaning and for browsing, targeting casual and professional users, with encouraging results for future research and adoption.

Part 7: Design Rationale and Camera-Control; International audience; Interaction design is a complex and challenging process. It encompasses skills and knowledge from design in general as well as from HCI and software design in particular. In order to find better ways to support interaction design and propose methods and tools to further the research in this area we must first better understand the nature of interaction design in practice. In this paper we present two small case studies which attempt to analyse design and decision-making through the lens of one particular theoretical framework. The framework seeks to focus design activities via its artifacts and the design spaces that exist in order to support reasoning about the process and the evolution of the artifacts. Our case studies show that we can use such a framework to consider real-world design projects, and also that there are further considerations that might usefully be included in such a framework.

Part 9: Field Trips; International audience; We proposes a field trip to understand how older adults in India construct and maintain informal support networks. The aim of the study is to get a nuanced view on older adults’ practices of receiving from and providing support to peers, family, friends, and neighbors. Group discussions and collaborative photography will be applied to investigate. Findings will be interpreted to understand implications for how to design for support.

Part 3: UX Adoption in the Organizations; International audience; This paper examines the views of user experience (UX) professionals on the definitions of usability and UX, and compares the findings between countries and within different socio-cultural groups. A mixed-method analysis was employed on data gathered on 422 professionals through a survey in Turkey, Finland, Denmark, France, and Malaysia. Usability appears to be an established concept, respondents across all countries agreeing on the importance of the ISO 9241-11 definition. There is also a tendency that UX professionals attach organizational perspective to usability. UX professionals diverge when defining UX, and there are systematic differences related to socio-cultural conditions. UX professionals in Finland and France incline more towards the definition highlighting the experiential qualities, when compared to Turkey and Malaysia that incline towards the definition reflecting the ease of use, utility, attractiveness, and degree of usage. Further research should address the implications of the diverse meanings and contexts of usability and UX.

Part 5: Co-design Studies; International audience; In this paper, we focus on creative practices associated with smartphone images for supporting scientific work. We employed observations and semi-structured interviews with 12 research staff members from a biomedical engineering institute over a period of three months and explored the role smartphone images play in supporting their scientific activities. We studied different ways smartphone images are incorporated into researchers’ everyday work. Our findings highlight practices and motivations associated with the use of smartphone images. Based on our findings, we provide implications for designing innovative smartphone apps and particularly emphasize the role smartphones can play in developing and maintaining hybrid lab-books.

Part 6: Courses; International audience; This two-part course takes a practical approach to introduce the principles, methods and tools in task modelling. Part 1: A non-technical introduction demonstrates that task models support successful design of interactive systems. Part 2: A more technical interactive hands-on exercise of how to “do it right”, such as: How to go from task analysis to task models? How to assess (through analysis and simulation) that a task model is correct? How to identify complexity of user tasks.

Part 7: Pointing and Target Selection; International audience; Selecting commands is ubiquitous in current GUIs. While a number of studies have focused on improving rapid command selection through novel interaction techniques, new interface design and innovative devices, user performance in this context has received little attention. Inspired by a recent study which formulated information-theoretic hypotheses to support experimental results on command selection, we aim at explaining user performance from an information-theoretic perspective. We design an ad-hoc command selection experiment for information-theoretic analysis, and explain theoretically why the transmitted information from the user to the computer levels off as difficulty increases. Our reasoning is based on basic information-theoretic concepts such as entropy, mutual information and Fano’s inequality. This implies a bell-shaped behavior of the throughput and therefore an optimal level of difficulty for a given input technique.

Part 8: Interactive Posters; International audience; Although the issue of limited mobility affects a large portion of the population, current navigation systems working with roadway-based geodatabases are designed primarily for cars and therefore cannot efficiently help. Usage of the professionally created sidewalk-based geodatabase is a solution. However, the professional geographical “on-site reconnaissance” is labor demanding. In this poster, we report on results of preliminary research focused on a design of the gamified collection of accessibility attributes by non-expert crowd, which will reduce the data collection cost. Preliminary results suggest the feasibility of the approach supported by a proper guidance of non-experts and creativity of achieving precise measurements.

Part 4: Virtual Reality and Feeling of Immersion; International audience; This research addresses the issue of the memory-experience gap, the disconnect between momentary perceptions and post experience reporting as relates to HCI research methodologies and the study of immersive technology-mediated experiences in particular. The paper presents an overview of contemporary understanding of immersion and examines HCI methods that investigate participant experiences. We introduce Experience Probes, an integrated design and evaluation methodology that affords momentary reporting by blending states of reflection and immersion in a structured activity situated within the immersive experience. A pilot study is presented that examines an immersive soundscape installation and an Experience Probe enacted through participant-authored sound maps. The maps provide data for thematic analysis, and are coded for signs of self-perception and a sense of place to evaluate participants’ sensations of presence and immersion. Preliminary results are discussed in relation to the reality-virtuality continuum and suggest that the reflective act of reporting, and the experience of immersion within the soundscape installation are not mutually exclusive. This research seeks to extend HCI methods by overcoming the memory-experience gap in the evaluation of technology-mediated experiences.

In this paper we present a preliminary user study conducted on a walk-up-and-use musical instrument dubbed Collective Loops specifically designed for co-located collaborative interaction for the general public. The aim of this study was to verify that displaying all users’ choices in a shared interface would promote and facilitate user engagement in creative collaboration. Although the results do not confirm our hypothesis, the experiment allowed us to detect a more general design issue with such walk-up-and-use multi-display installations: striking the right balance between the different interfaces in order to release some of the users attention for the benefit of the collaborative process.

Part 1: Security and Trust; International audience; In this paper we investigate the question whether users’ personalities are good predictors for privacy-related permissions they would grant to apps installed on their mobile devices. We report on results of a large online study (n = 100) which reveals a significant correlation between the user’s personality according to the big five personality scores, or the IUIPC questionnaire, and the app permission settings they have chosen. We used machine learning techniques to predict user privacy settings based on their personalities and consequently introduce a novel strategy that simplifies the process of granting permissions to apps.

Part 3: Assistive Technology for Blind Users; International audience; Zooming on large tactile displays can result in orientation loss, especially if the user’s reference point disappears from the visible area afterwards. To avoid such displacement we developed a focus zoom approach which keeps the currently focused element as central point for zooming. In this paper, we compare this approach with a conventional midpoint zoom (the center of the output area is maintained after zooming) on the touch-sensitive BrailleDis 7200 device. In a study with four blind and eight blindfolded sighted participants we could show that the focus zoom significantly reduces displacement of the focused element on the tactile output area. Locating the focus after doing a focus zoom needs significantly less time, reduces the overall workload and is also preferred by the users.

Part 3: Assistive Technology for Blind Users; International audience; Blind and visually impaired people are able to access visual charts by the mean of tactile representations. However, their production is time-consuming and requires know-how and skills in tactile chart design. Our main goal is to support blind, visually impaired as well as sighted authors by automating the creation process of tactile charts. We follow an user-centered design approach. Therefore, we analyzed both transcribers and users of tactile charts by conducting a survey on blind, visually impaired and sighted authors. On that basis, we identified steps and challenges of the production process, how users interact with tactile charts, design guidelines, as well as user preferences and tasks. As a result, we summarize requirements for an application that automates the creation of tactile charts.

Part 7: Design Rationale and Camera-Control; International audience; In the design process, designers make a wide variety of decisions that are essential to transform a design from a conceptual idea into a concrete solution. Recording and tracking design decisions, a first step to capturing the rationale of the design process, are tasks that until now are considered as cumbersome and too constraining. We used a holistic approach to design, deploy, and verify decision cards; a low threshold tool to capture, externalize, and contextualize design decisions during early stages of the design process. We evaluated the usefulness and validity of decision cards with both novice and expert designers. Our exploration results in valuable insights into how such decision cards are used, into the type of information that practitioners document as design decisions, and highlight the properties that make a recorded decision useful for supporting awareness and traceability on the design process.

Part 4: Information on Demand, on the Move, and Gesture Interaction; International audience; Interfaces based on mid-air gestures often use a one-to-one mapping between gestures and commands, but most remain very basic. Actually, people exhibit inherent intrinsic variations for their gesture articulations because gestures carry dependency with both the person producing them and the specific context, social or cultural, in which they are being produced. We advocate that allowing applications to map many gestures to one command is a key step to give more flexibility, avoid penalizations, and lead to better user interaction experiences. Accordingly, this paper presents our results on mid-air gesture variability. We are mainly concerned with understanding variability in mid-air gesture articulations from a pure user-centric perspective. We describe a comprehensive investigation on how users vary the production of gestures under unconstrained articulation conditions. The conducted user study consisted in two tasks. The first one provides a model of user conception and production of gestures; from this study we also derive an embodied taxonomy of gestures. This taxonomy is used as a basis for the second experiment, in which we perform a fine grain quantitative analysis of gesture articulation variability. Based on these results, we discuss implications for gesture interface designs.

Part 5: Co-design Studies; International audience; Financial literacy can play an important role in supporting the livelihood of the poor. Sri Lanka, being a country that aims to become a knowledge economy, has started to integrate the use of technology in its primary education. This paper presents a case study from a Co-Design activity with primary school children in rural Sri Lanka to ideate designing of mobile applications to engage primary school students in financial literacy. Three workshops were conducted spanning over two months based on the bonded design method. Techniques involving bags of stuff, storyboarding and stickies were utilised to support idea generation. Two themes; shopping and transporting were prominent among the final designs. From the findings of this paper, we discuss the design inspirations of the study and the impact that scaffolding practices had on the outcomes of the study. Finally, we lay out some initial guidelines to follow when conducting co-design workshops with rural and resource constrained children in Sri Lanka.

Part 7: Design Rationale and Camera-Control; International audience; Interaction design processes are characterised by multi-disciplinary teamwork and by an interplay of creative, situated and analytical thinking. Although design in the domain of human-computer interaction has been widely investigated, the focus of research has been mainly on the user’s role and several authors refer to the need for a deeper understanding of the increasingly complex interaction design processes. This paper suggests a conceptual framework for interaction design that accommodates and unifies different perspectives from general design research while considering the specificities of the domain. Within the framework, description and analysis is done through the lens of design spaces, design artefacts, and refinement relationships between design artefacts. The framework extends existing concepts of design spaces by introducing complex spaces which acknowledge that design is rarely an individual activity but is more often undertaken by teams of designers. The framework also offers a distinction between design options into alternatives and variants to better describe and guide processes of idea generation and a convergence within, and between different sub-spaces and sub-teams. Different types of refinement between design artefacts are also discussed.

Part 2: Aging and Disabilities; International audience; People with stereo-deficiencies usually have problems for the perception of depth using stereo devices. This paper presents a study that involves participants who did not have stereopsis and participants who had stereopsis. The two groups of participants were exposed to a maze navigation task in a 3D environment in two conditions, using a HMD and a large stereo screen. Fifty-nine adults participated in our study. From the results, there were no statistically significant differences for the performance on the task between the participants with stereopsis and those without stereopsis. We found statistically significant differences between the two conditions in favor of the HMD for the two groups of participants. The participants who did not have stereopsis and could not perceive 3D when looking at the Lang 1 Stereotest did have the illusion of depth perception using the HMD. The study suggests that for the people who did not have stereopsis, the head tracking largely influences the 3D experience.

Part 5: Case Studies; International audience; Beside decreasing the abilities, individual difference prevails among older adults, as some individuals are completely healthy at the age 90 while some are not at even 60. In context of touchscreen interface design, it is critical to understand the design space as a function of abilities. In this work, we articulate a better understanding of the effects of ageing and examine their HCI task performing capabilities in terms of interfaces design. We design a text-entry interface in particular, as ageing users often achieve slow text entry performance, thus proving to be a bottleneck for technology use. Our developed text entry interface is tuned based on the parameter values for Elderly having finger tremor. We present initial study results showing the improvement of the accuracy of touch typing in smartphone over the baseline Qwerty keyboard. By carefully considering other sensorimotor abilities, we believe that the current smartphone text-entry interface designs will become more usable to the ageing populations.

Part 3: Multitouch Interaction; International audience; Defining the form factor and setup of surfaces, i.e., their size, position , and orientation, is one of the first decisions made when designing multi-surface environments (MSE). To support these choices, we conducted a study on how the orientation of a large display used alongside tablets impacts collaboration. Previous research involving only one interactive surface shows that display orientation changes how people interact with the display, the way they position themselves, or look at each other. Our study shows that in a MSE setting, the orientation of a large surface has a different impact: (1) it nuances previous results showing that horizontal surfaces are better for collaboration. (2) it impacts the way activities are conducted. The horizontal condition leads to more implicit coordination and balanced interaction with the large display, but to less structured work, while in the vertical condition, group coordination is more explicit and is structured around one main interactor. Compared to previous work, we also propose a more structured, comprehensive and detailed analysis grid for collaboration in MSE. Finally, based on our results, we derive recommendations for MSE design.

Part 2: Social Media and Design Innovation; International audience; We present Breathing Friend – a portable and tangible device that uses haptic interaction to unobtrusively stimulate mindful breathing as efficient stress coping method. Its design is optimized for holding in user’s hands. By changing its shape, it sends haptic signals to the user. Several studies were conducted where we explored and verified the form factors of the artifact, interaction methods, therapeutic effect, fitting to everyday life, and influence on the breathing pattern.

Part 7: Pointing and Target Selection; International audience; Movement time in Fitts’ law is usually considered through the ambiguous notion of the average of minimum movement times. In this paper, we argue that using two distinct metrics, one relating to minimum time and the other relating to average time can be advantageous. Both metrics have a lot of support from theoretical and empirical perspectives. We also give two examples, one in a controlled experiment and the other in a field study of pointing, where making the minimum versus average distinction is fruitful.

Part 3: Human Perception, Cognition and Behaviour; International audience; The discussion of color in HCI often remains restricted to issues of legibility, aesthetics or color preferences. Little attention has been given to the emotional and semantic effects of color on digital content. At the example of black and white, this paper reviews previous studies in psychology and reports an experiment that investigates the influence of black, white and gray user interface backgrounds on the perception of sentiment in chat messages on a social media platform (Twitch.tv). Of sixty-seven participants, those who rated the messages against a black background perceived them more negatively than those who worked against a white background. The results suggest that user sentiment perception can be influenced by interface color, especially for ambiguous textual content laced with irony and sarcasm. We claim that this knowledge can be applied in persuasive interaction and user experience design across the entirety of the digital landscape.

Part 8: Interactive Posters; International audience; Bringing interactivity and effectiveness of teaching in the classroom is always challenging especially in the developing countries. Previous studies show best practices of smart technologies in the classroom.This research was conducted to develop an efficient and low-cost solution for teachers in managing the higher number of students, assessing progress and increasing student engagement in the classroom. We developed My Class Manager; a Smartphone application for quiz and paper marking, audio quiz for native language learning and performance management throughout the semester. We conducted a series of five evaluations of three classes of sizes 30, 35 and 40. Results of the evaluations show an increasing interest of students in the classroom, improved class engagement & attentions. It creates a time-efficient learning environment.

Part 5: Co-design Studies; International audience; Demands for technological solutions to address the variety of problems in healthcare have increased. The design of eHealth is challenging due to e.g. the complexity of the domain and the multitude of stakeholders involved. We describe a workshop method based on Critical Incidents that can be used to reflect on, and critically analyze, different experiences and practices in healthcare. We propose the workshop format, which was used during a conference and found very helpful by the participants to identify possible implications for eHealth design, that can be applied in future projects. This new format shows promise to evaluate eHealth designs, to learn from patients’ real stories and case studies through retrospective meta-analyses, and to inform design through joint reflection of understandings about users’ needs and issues for designers.

Part 4: Virtual Reality and Feeling of Immersion; International audience; Omnidirectional video (ODV) is a medium that offers the viewer a 360-degree panoramic video view of the recorded setting. In recent years, various novel platforms for presenting such content have emerged. Many of these applications aim to offer an immersive and interactive experience for the user, but there has been little research on how immersive these solutions actually are. For this study, two interactive ODV (iODV) applications were evaluated: a CAVE system and a head-mounted display (HMD) application. We compared the users’ expectations and experience and the level of immersion between these systems. Both indoor and outdoor recorded environments were included. First, the results indicate that the user’s experiences with these applications exceed their expectations greatly. Second, the HMD application was found to be more immersive than the CAVE system. Based on the findings of this study, both systems seem to have a great potential for presenting ODV content, thus offering the user an immersive experience for both indoor and outdoor content.

Part 2: Social Media and Design Innovation; International audience; Self-monitoring technologies (such as heart rate monitors and activity trackers) that sense and collect physical activity data are becoming increasingly common and readily available. These devices typically represent the captured data using numbers and graphs that primarily appear on digital screens. More recently, representing data in a physical form such as 3D printed physical artifacts is gaining currency within HCI, owing to the engagement opportunities that come with physical representations. However, there exists a limited understanding of how to design such physical representations of personal data. To contribute to this understanding, we present a set of ten design themes, developed from the analysis of two independently designed systems that construct 3D printed physical artifacts from physical activity data. Each design theme describes a unique design feature that designers could incorporate in their design to make physical representations more engaging and playful. We envisage that our work would encourage and guide designers to think about different ways of supporting physical activity experiences.

Part 8: Interactive Posters; International audience; In this poster, we are addressing the topic of “system’s evaluation” from the point of view of assessing the usability of a gamified experience with 20 teenagers aged 15–17 years. The currently tested experience was ideally designed for children 9–10 years. In order to adapt the application to teenagers, we tested it with 20 targeted users. In this poster, we share the results and encourage a discussion among the researchers about how to adapt the gamified experience designed for children to a teenage audience.

Part 7: Demonstrations; International audience; Patient coaching is integral to cardiac rehabilitation programs to help patients understand, cope better with their condition and become active participants in their care. The introduction of remote patient monitoring technologies and tele-monitoring solutions have proven to be effective and paved way for novel remote rehabilitation approaches. Nonetheless, these solutions focus largely on monitoring patients without a specific focus on coaching patients. Additionally, these systems lack personalization and a deeper understanding of individual patient needs. In our demonstration, we present a tool to personalize e-coaching based on individual patient risk factors, adherence rates and personal preferences of patients using a tele-rehabilitation solution. We developed the tool after conducting a workshop and multiple brainstorms with various caregivers involved in coaching cardiac patients to connect their perspectives with patient needs. It was integrated into a comprehensive tele-rehabilitation application.