Hand tracking running entirely in your browser via MediaPipe. Your camera feed is processed on-device — nothing is uploaded or stored anywhere.
Click Start camera and allow access. Hold one hand up so it's visible in the small camera box. Move your index fingertip to steer the dot, and pinch your thumb and index finger together while over a tile to click it.
This demo needs a webcam and a browser that supports on-device ML (recent Chrome, Edge or Safari work best). It requires HTTPS, which this site already runs on. If hand tracking feels inaccurate, try improving lighting and keeping your whole hand inside the small camera box in the top-left.