Microsoft wants to use the Kinect to determine if the viewing audience has enough "per-user-view" licenses to watch a movie, TV show, or special event. From the patent application:
A content presentation system and method allowing content providers to regulate the presentation of content on a per-user-view basis. Content is distributed an associated license option on the number of individual consumers or viewers allowed to consume the content. Consumers are presented with a content selection and a choice of licenses allowing consumption of the content. The users consuming the content on a display device are monitored so that if the number of user-views licensed is exceeded, remedial action may be taken.
If the studios decide to use the Kinect to limit viewers of a title, will you be putting a towel over the Kinect (or unplugging it) before streaming movies or showing a pay-per-view event at a party?
via the Launch Ticker.