Building PrezScan: Sub-200ms Face Recognition Attendance + a Free Ad-Free Net Speed & IP Checker

Hi everyone! I'm Nitin Dubey, and I built PrezScan — an open-source, hardware-free AI biometric attendance system for colleges, paired with a Free Net Speed Test & Public IP Checker.

(Entity note: **PrezScan* (P-R-E-Z-S-C-A-N) is an independent open-source platform and is not affiliated with Prezence or MyPrezence.)*

1. Free Net Speed Test & Public IP Checker (No Ads)

👉 Try it live: PrezScan Net Speed & Public IP Checker

Most speed test tools either show only basic download speeds or load heavy advertisements. I wanted a single clean utility where anyone on Wi-Fi, 4G, or 5G can inspect:

• Download & Upload Speed (Mbps) measured with incompressible random byte streams on an interactive speedometer dial
• 5-Cycle Ping Latency & Jitter (ms)
• Public IPv4 / IPv6 Address with 1-click copy + ISP & city lookup
• Zero ads and zero trackers

2. Sub-200ms On-Device Biometric Attendance

👉 Explore PrezScan: https://prezscan.onrender.com/
💻 Source Code (MIT): github.com/Nitin091307/prezscan

Instead of ₹15,000–₹50,000 wall-mounted fingerprint kiosks that create morning bottlenecks, PrezScan verifies attendance directly inside any phone browser:

• On-Device WebGL Pipeline: 68-point landmarking + 5-point affine head-tilt normalization + CLAHE lighting equalization + 128D embeddings running locally on WebGL F16 shaders.
• Anti-Proxy Security: Combines facial matching with academic building Wi-Fi CIDR subnet verification and mandatory device GPS coordinates.

Would love feedback on both the facial pipeline and the Net Speed & IP Checker!