Biometric Attendance System

Abstract

This paper presents the design, implementation, and evaluation of a fingerprint-based Biometric Attendance System tailored for educational institutions. The system integrates an optical fingerprint sensor with an Arduino microcontroller and HC-05 Bluetooth module to capture and transmit biometric templates to a Node.js WebSocket server and Firebase Firestore backend. A React.js web interface provides real-time attendance tracking, reporting, and administrative control. Performance testing with twenty students achieved an end-to-end attendance cycle in 8–10 minutes, demonstrating marked improvements over traditional manual methods. The system's security architecture is fortified through end-to-end encryption and token-based authentication, addressing critical vulnerabilities in student data protection. Performance metrics indicate a False Rejection Rate (FRR) of <2% and a False Acceptance Rate (FAR) of <0.5%, positioning the system as a reliable alternative to manual and card-based monitoring