waving your arms...
The technonology behind natal is much more sophisticated than the eye toy v1 and v2, the ability to detect 3 dimensions due to both the video camera and infrared sensor is a huge leap forward. Whether it is implemented in a way that is affordable yet accurate enough is another question.
furthermore, i could honestly imagine it being pretty cool if done properly.
imagine navigating through the xbox daskboard with the flick of a wrist. or better yet,using it to manage multiple windows of video, pictures, spread sheets, whatever you want. once again with natal on the 360 might not be quite there ( that is TBD) i feel that natal is a stepping stone to the future which has me very excited. assuming 2012 isnt.... u know.
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