OCULUS RIFT PHONE HOME: The virtual reality headset reports your every move to Facebook and to advertisers.

When the headset’s software is installed on a computer, it adds a process that allows the PC to watch what the headset is doing and send that back to Oculus. That allows the headset to know when it is being used and turn itself on — but it also allows the company to collect information on people’s head movements and activity and send it back to advertisers.

The terms and conditions include a line saying that the headset will collect “Information about your physical movements and dimensions when you use a virtual reality headset”, along with a range of more usual information like data about users’ computers and location.

Given some of the sordid ways VR will be put to use, this “feature” should give people pause.