Flaws of the motion controllers

PolarityGamers writes:

All three motion controllers are in fact some form of CGI motion capture. For the Wii, we have two fix IR source for triangulation calculation to find Wiimote’s relative position. For the PS3, we have a camera tracking a glowing sphere, and calculate distance base on size of the sphere getting bigger and smaller moving in and out of the camera. And we have Natal, it uses an IR projector to capture a 3D image (much like a radar gun) and use programing to track joints of a person’s body.