I specialy like these characteristics.
http://nitrogen.posterous.com/home-auto ... l-with-kinThis can not only detect occupancy. But, it can tell how many occupants there are and where they are in the room.
Real-time People detection and tracking with multiple Kinect cameras
Object Recognition using Kinect on the PC (Is it a person or a pet.)
There is also a thread on the Homeseer forum about the Kinect
http://board.homeseer.com/showthread.ph ... ght=Kinect