One rather exciting use case for WebRTC is head tracking — detecting the movement of your head (or other appendages) in relation to a webcam — which in turn allows us to create gesture-based controls. We created a demo employing head tracking to coincide with the Opera 12 release (this marked the first desktop browser to support camera access via the getUserMedia API) — FaceKat. (via Head tracking with WebRTC - Dev.Opera)
Source: dev.opera.com





