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Attendance is a mandatory requirement for employee attendance. There are still many who use the manual system. Of course it is not efficient, so an attendance attendance system is needed that can run to facilitate attendance tasks and activities. Attendance management is one of the systems that is currently very much needed along with the large number of human populations that must be recorded. However, most of the attendance systems currently used are still using conventional methods such as signatures to fill attendance in this way, so there are lots of loopholes for fraud that often occur. By utilizing a tool using a microcontroller. This system uses RFID RC 522 as a tool and programming language for PHP and SQL server for database management. This system uses the blackbox testing method to find out the website designed to function correctly employee attendance information technology with employee ID card documents as a website-based system there are facilities such as employee data management, room data management, attendance data management, and monthly attendance processing using cards. employee identity. It can be concluded that by using this website, the attendance process will be more efficient and can be easily monitored by leaders and the center.

The guest book used at Brawijaya University is digital, where visitor data is stored in a MySQL database. The use of barcode systems is quite effective compared to manual books that are manual, however, the barcode is printed, so that if too often affected by friction, the barcode can be damaged, to overcome the weaknesses that are owned by the barcode, the use of RFID technology can be a new alternative , because RFID (tag) is a technology in the form of an embedded chip. This research methodology discusses the framework carried out in the development of RFID and Fingerprint as an alternative to library guest book registration. In the implementation of NodeMCU and fingerprint sensor to the library guest book database with VB.Net GUI, it can be implemented well. Data filling on RFID cards can be done on data blocks, ie blocks other than trailer blocks and manufacturer blocks. Recording in the library guest book database can be done by comparing the registration time of students, if students register on the same day, then recording is only done once, ie at the beginning of registration. Recording can be done using queries directly embedded in the GUI, or calling functions / procedures stored in the database.