Kinect 2 will see that you're eating doritos and drinking mountain dew, detect which flavours you prefer and order them automatically whenever you finish a bag/bottle, charged on your Live account.
Your favorite snacks will be sent right at your doorstep for maximum convenience, even when (you think) your XBox One is turned off.
And don't worry about Kinect always having a camera pointed at you. The software is made so that the Kinect can only see Doritos and/or Mountain Dew, so it's completely blind to everything else.
No one will be watching you. Only your snacks. For your convenience.