I get enough exercise just pushing my luck
Awesome technology developing
That's basically what TrackIR / OpenTrack / Facetrack is. It's been around for a long time. You use either IR reflective dots, or IR lights with a camera that picks up Infrared Light and use it to translate your head movement into something. Most everyone uses it to translate head movement in real life into virtual head movements, but it is cool to see people start to use it for other things.
Danneskjold's Comedy Hour Special.