<P> Special software can use the video stream from a webcam to assist or enhance a user's control of applications and games . Video features, including faces, shapes, models and colors can be observed and tracked to produce a corresponding form of control . For example, the position of a single light source can be tracked and used to emulate a mouse pointer, a head - mounted light would enable hands - free computing and would greatly improve computer accessibility . This can be applied to games, providing additional control, improved interactivity and immersiveness . </P> <P> FreeTrack is a free webcam motion - tracking application for Microsoft Windows that can track a special head - mounted model in up to six degrees of freedom and output data to mouse, keyboard, joystick and FreeTrack - supported games . By removing the IR filter of the webcam, IR LEDs can be used, which has the advantage of being invisible to the naked eye, removing a distraction from the user . TrackIR is a commercial version of this technology . </P> <P> The EyeToy for the PlayStation 2, PlayStation Eye for the PlayStation 3, and the Xbox Live Vision camera and Kinect motion sensor for the Xbox 360 and are color digital cameras that have been used as control input devices by some games . </P> <P> Small webcam - based PC games are available as either standalone executables or inside web browser windows using Adobe Flash . </P>

Webcam data from a video conference is an example of