This is Phase 1: it detects 21 hand landmarks per hand, live, entirely on your device using MediaPipe. Nothing is uploaded. It does not yet recognize which sign you're making — that's Phase 2.
Press “Start camera” to begin. Everything runs on your device.
No hand detected yet.
Your camera feed is processed in your browser and never leaves your device. The first run downloads the MediaPipe model and runtime from a CDN; after that, only landmark math runs locally.