
They have said the camera can be turned off, and beyond that you could unplug the system when you're done with games. That article also mentions other things about privacy concerns, i.e. "you control how data is used," but I'm not sure how much I buy that when the camera is on or ... paused, whatever that means. The estimating calories burned thing would be useful for me, though.
If I owned one, I'd be shutting down and unplugging the system cause of that damn camera though, so I still don't want the camera on the thing, but maybe you can move the camera around/put tape over it, etc. I just don't want the hassle or feeling of the thing might be watching me. Granted, they could get much more useful info like your card info without the use of a camera or microphone.