A Portable and Less Time Consuming Wireless Biometric Attendance System for Academic Purpose Using NodeMCU Microcontroller

In this paper, a portable wireless biometric attendance system for academic purpose has been designed and developed using fingerprint sensor and NodeMCU microcontroller. One of the cardinal features of this system is the portability of this system and also the reduction of time consumption compared to the conventional stationary wired/wireless systems where students have to stand in serials and wait for his/her turn which costs good amount of time during a class period. The smaller size of our system has enabled the students to pass the device from one to another without interrupting the class lecture and saves valuable time of the class lecturer which is generally a fixed period of time. All the data of a particular student are stored in a database when a student's finger is registered for a particular institute and after that whenever the student enrolls, his/her attendance is counted automatically and stored in the destined database wirelessly. The attendance marks based on attendance percentages of the students are automatically calculated and uploaded on the webpage. So whenever a semester finishes the course teacher can get percentage information as well as the corresponding attendance marks of all the students without having a headache of it in the entire semester. Our system also notifies the user if any student is absent for 10 successive classes (as per Govt. rule in Bangladesh, course teacher has to inform authority if any student is absent for 10 days successively).