1. A system for tracking the movements of an animate or inanimate body, comprising: a plurality of optical tags supported at different positions on the body; a tag controller supported on the body to activate the optical tags in an on/off illumination sequence; and a position sensor disposed remotely from the body, including: a plurality of cameras, each outputting electrical signals corresponding to the location of the optical tags; processing circuitry for receiving the signals from the cameras and determining the positions of the tags in three-dimensional space utilizing triangulation techniques; and sychronization circuitry coordinating the operation of the tag controller and position sensor so that only one tag is imaged per camera exposure.