www.free-track.net FreeTrack is a free head tracking program that can be used with any Windows compatible video device, typically a webcam, in addition to the Nintendo Wii Remote. It can measure head rotation and translation, together a total of six degrees of freedom (6dof) and can output to FreeTrack and TrackIR interfaces as well as mouse, keyboard and joystick controls. This video demonstrates the stability and responsiveness of FreeTrack v2.1, using a cheap 30fps Logitech webcam, in Aces High II. More details en.wikipedia.org www.free-track.net