If you've ever complained about surveillance then I don't see how you could even consider buying this. >Kinect is also used for lots of little things throughout the Xbox One's user experience. Profiles support fast facial recognition for sign-in. Once a profile has a face associated with it, the console will sign that person in whenever they sit in front of the console — it even says hello. Controllers sync automatic…
http://www.xbox.com/en-GB/xbox-one/get-the-facts
>Xbox One does not require a Kinect to be plugged in for the system to function.
You can supposedly control the use of your data according to the fact page also.