Smart Attendance
Multi-tier anti-proxy physical presence verification platform. 4-factor physical defense combining Haversine GPS geofencing, 10-second rotating cryptographic QR codes, email OTPs, and immutable Prisma audit trails.
Traditional attendance logging fails on one fundamental axis: presence is claimed, not proven.
Traditional attendance logging fails on one fundamental axis: presence is claimed, not proven. Students routinely share credentials, forward QR code screenshots across group chats, or fake their locations to game attendance quotas. The system had to turn proxy attendance into an insurmountable physical impossibility.
Architected a multi-role institutional workflow across Student, Professor, and Administrator personas with strict privilege boundaries.
Implemented meter-level GPS geofencing validation using the Haversine formula to enforce physical perimeter presence within the classroom before session interaction.
Engineered 10-second rotating dynamic QR codes generated from session-specific cryptographic secrets (qrSecret) and epoch timestamps, rendering forwarded screenshots expired in moments.
Integrated dual-factor email OTP verification over SMTP and enforced database relational constraints in Prisma ORM with unique composite keys ([sessionId, studentId]) and full audit logs of failed attempts.