Your own movement, puppeting a character. A pose model and a rigged 3D character both run in this tab; nothing about you is ever sent anywhere.
Also try Iris, a gaze-controlled Breakout game built on the same kind of on-device face reading.
Pressing this asks your browser for camera access. The video frame is read into an offscreen canvas and fed to a pose model that runs on your device; no frame, image or measurement is ever transmitted, because nothing here has anywhere to send it.
Also downloads the pose model and the character, both served from this site, cached by your browser afterwards.