Smart Attendance System Using QR Code with Raspberry Pi

Abstract

Traditional manual attendance recording in educational institutions is time-consuming, error-prone, and inefficient. This paper presents a Smart Attendance System using QR Code technology integrated with Raspberry Pi. Each student is assigned a unique QR Code encoding their ID and course information. A Pi Camera connected to the Raspberry Pi scans QR Codes, decodes student information using OpenCV, records timestamps, and updates attendance records in real-time. The system generates automated attendance reports exportable to Excel format. Evaluation demonstrates 98.7% QR Code detection accuracy, 0.8-second processing time per scan, and 95% reduction in attendance recording time compared to manual roll-call methods, while providing tamper-proof digital records