Camera off. Start explicitly to request browser permission.
Scope, limits & privacy
Compares a 64×48 greyscale frame at up to five samples/second. Score is the percentage of pixels changing by more than 20/255 relative to the previous sample; threshold determines the change indicator. Lighting, camera movement and compression can trigger it. Optional quiet beeps require explicit enabling, have a three-second cooldown and stop on exit. Active-session experiment only: no unattended security guarantee, recording or remote alerts.
HTTPS or localhost and browser camera permission are required. Facing direction and dimensions are preferences; delivered settings are shown. No camera history or uploads. Hidden tabs stop capture, and Reset, switching or exit releases captures, workers, URLs and tracks.
