If you have some tinfoil handy, now might be a good time to fashion a hat. At the Digital Living Room conference today, Gerard Kunkel, Comcast’s senior VP of user experience, told me the cable company is experimenting with different camera technologies built into devices so it can know who’s in your living room.

The day my cable box comes with any sort of built-in camera is the day I cease to pay the cable company for TV programming. Period.