An anonymous reader writes with news of an interesting demo for clmtrackr (a Javascript library for tracking of facial features) that hides your face using 3D masks overlayed on the video from your webcam using WebGL. The effect is kind of neat, and a bit creepy. The demo works in Chromium here, but not in Firefox (Debian unstable). There are a couple other demos; the facial deformation demo is reminiscent of the intro screen to Mario 64.