According IGN, Kinect has problems with ‘skeletal framing’ if you are sitting down. Whilst this may not be a huge problem whilst you are playing a game, if you were hoping to laze on the sofa and just wave your hand to fast forward a movie then you may be out of luck.
“All the cool options to grab a slider and advance through frames of a movie you are watching only work when you are on your feet.”
“Kinect, we’ve been told, has problems handling your skeletal frame while sitting. The voice commands still work, but every game we’ve seen and even simple menu navigation has to be done with you out of your seat.”
Another problem occurred when the same demonstrator was showing off the Ubisoft ‘Your Shape’ demos. Felicia Williams was the lady being scanned, once at the Microsoft press conference and then again at the Ubisoft event. Somehow in the space of a few hours she has managed to shrink two inches.
Source: IGN
stonyk
I reckon that natal will work sitting down AND allow controller use at the same time, allowing for core games with subtle movements and speech included. Although this would stop all the moaning about using controllers and/or standing up I still don’t see natal as being useful, other than eye toy style games.