Stype is a company that makes RedSpy hardware products that operate with physical cameras and tracks their position, rotation and viewing/lens properties, which, combined with TouchDesigner 3D rendering, enables virtual graphics to be overlaid over live action camera feeds.

TouchDesigner can use Stype tracking data sent over an ethernet UDP connection to control virtual cameras and to add simulated lens distortion to rendered images.

See Stype TOP, Stype CHOP and FreeD In CHOP.