{"slug": "how-we-built-prezscan-free-hardware-free-biometric-attendance-for-indian", "title": "How We Built PrezScan: Free Hardware-Free Biometric Attendance for Indian Universities", "summary": "A developer built PrezScan, a free, hardware-free attendance web app for Indian universities that combines on-device 68-point facial recognition with campus Wi-Fi subnet (CIDR) geofencing to prevent proxy attendance. Verification runs client-side in the browser via WebGL GPU acceleration at under 200ms, and raw face photos are never transmitted or stored—only local 128-dimensional vector embeddings are evaluated, which the developer frames as compliant with India's DPDP Act 2023. The app also exports monthly attendance ledgers as formatted Excel reports.", "body_md": "Every morning across engineering colleges and universities in India, hundreds of people line up in front of wall-mounted fingerprint machines that break down and cause morning delays.\n\nTo solve this, we built **PrezScan** ([https://prezscan.onrender.com](https://prezscan.onrender.com)) — an independent, 100% free, hardware-free smart attendance web app engineered specifically for Indian higher-education campuses.\n\n**Dual-Lock Anti-Proxy Attendance**:\n\nEnforces a physical double-lock combining on-device 68-point AI facial recognition with academic building Wi-Fi subnet (CIDR) geofencing. Marking attendance outside the campus building or buddy-punching is physically impossible.\n\n**Sub-200ms Verification**:\n\nRuns client-side directly in the browser engine using WebGL GPU acceleration.\n\n**100% Privacy by Design (DPDP Act 2023 Compliant)**:\n\nRaw face photos are never sent over the internet or stored on servers; only local 128-dimensional mathematical vector embeddings are evaluated.\n\n**1-Click Audited Excel Reports**:\n\nMonthly attendance ledgers export complete timestamps and session hours instantly in formatted spreadsheets.\n\n• Live Web Application: [https://prezscan.onrender.com](https://prezscan.onrender.com)\n\n• Source Code & Documentation: [https://github.com/Nitin091307/attendanceforu](https://github.com/Nitin091307/attendanceforu)", "url": "https://wpnews.pro/news/how-we-built-prezscan-free-hardware-free-biometric-attendance-for-indian", "canonical_source": "https://dev.to/nitin_dubey_c80723fdab031/how-we-built-prezscan-free-hardware-free-biometric-attendance-for-indian-universities-3mcl", "published_at": "2026-11-02 18:11:47+00:00", "updated_at": "2026-11-02 18:23:12.886731+00:00", "lang": "en", "topics": ["computer-vision", "ai-products", "ai-tools", "ai-ethics"], "entities": ["PrezScan", "Nitin091307", "GitHub", "Render"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/how-we-built-prezscan-free-hardware-free-biometric-attendance-for-indian", "markdown": "https://wpnews.pro/news/how-we-built-prezscan-free-hardware-free-biometric-attendance-for-indian.md", "text": "https://wpnews.pro/news/how-we-built-prezscan-free-hardware-free-biometric-attendance-for-indian.txt", "jsonld": "https://wpnews.pro/news/how-we-built-prezscan-free-hardware-free-biometric-attendance-for-indian.jsonld"}}