Everyone already has a smartphone, laptop, tablet, etc. All of those devices have cameras and microphones. Most of them can track your location to within a few feet. They have your email, your web history, your bank accounts and passwords. And people are worried about the KINECT? Please. The hardware to watch, listen and track you is already in your house. You're already trusting the companies not to be (too) evil, and trusting the software to protect your privacy. What's one more device?