The WorldViz PPT system is a low latency, optical tracking solution. It consists of multiple camera sensors that track IR LEDs worn or held by the user. The system is easy to setup and accurate to a value in the sub-millimeter range. The 2D camera images are streamed to the computer running PPT Studio software which triangulates the 3D tracking points. This 3D tracking data is streamed to the Vizard rendering application to control the user's viewpoint, virtual hand/avatar, and other aspects of the virtual environment.