In-depth comparison of the big three's motion controllers.

[JaggedSac]

One of them is an RGB camera.  It might not be using time-of-flight model, but it is definitely sending pulses of infrared light.  The Johnny Lee guy is working on it now and basically equated it to a 2D array of lasers.  2D array as in 1000 X 1000(example) grid of lasers getting depth data.