According to a few sources, “Kinect” will only work if you stand in front of the device, due to the nature of how it tracks your movements.
This seems perfectly acceptable if you’re playing a game, with it being just like the Nintendo Wii, but if you were hoping of sitting on the sofa and fast forwarding and pausing films with just a gentle wave of your arm, you may be out of luck. The voice controls will still work however.
There’s also doubts over Kinects accuracy in measuring the distance and size of objects. During a demonstration the same demonstrator stood in front of the “Your Shape” software, only to find that the 2nd time she stood in front of it, a few hours later, she’d managed to shrink 2 inches. So either she took her shoes off or the software is fairly inaccurate, I know which one my money's on.