MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202621025337 A) filed by Sanjay Ganesh Kanade on March 03, 2026, for Cryptographically Secured Time-Bound Attendance Verification System Using Rotating Qr Tokens With Real-Time Validation.
Inventor includes Sanjay Ganesh Kanade.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: A cryptographically secured time-bound attendance verification system employs rotating HMAC-SHA256 signed QR tokens to enable simultaneous attendance marking by an entire class using a single shared token. The system comprises: a token generation engine with configurable validity window rotating at one second less than the window; a dual-state architecture using a volatile in-memory cache and a persistent relational database; a seven-layer sequential validation pipeline wherein layers one through six validate the shared token and layer seven independently prevents per-student duplicate attendance through a database unique constraint on session and student identifier; network-segment proximity verification rfor physical-presence audit; browser-based device fingerprinting via the SubtleCrypto API; administrator-configurable report field selection; and automated examination eligibility computation showing each student the consecutive sessions needed to reach the attendance threshold. A Progressive Web Application requires no software installation. A WebSocket channel delivers token updates and scan confirmations within five hundred milliseconds.
Disclaimer: Curated by HT Syndication.
