Comment by COGlory

>By this time there was already a well-known Black Mirror episode out involving computer vision tracking to ensure people really watched ads, so these ideas were floating around in the culture. As well as Sony's "say McDonald's to end the ad" patent surfacing around that time.

In addition, Microsoft actually filed a patent for a system that would use the Kinect to track how many people were in the room when watching rented movies, and upcharge you if you exceeded a certain number of people.

https://www.tweaktown.com/news/26574/microsoft_patent_could_...