BrotherRool said:
Well it can't detect finger, and finger movments, so wrist flicks seem a little subtle? It's not about the resolution, but recognising the motion I think
Kinect tracks 16 body points, including hands, feet, and neck. Its body part recognition comes from Microsoft Research, which publishes its work, so we know what it does in all the gruesome detail: http://research.microsoft.com/pubs/145347/BodyPartRecognition.pdf
But then, a game can also take the original depth map and perform its own recognition, so even finger gestures are not totally out of the question. I think we will see much more advanced usage of Kinect in the coming years.