Xbox One requires plugged-in Kinect to function

All Xbox One units will ship with a Kinect sensor, and the Xbox One must have the new Kinect sensor plugged in at all times in order to run, said Microsoft representatives in a Q&A about the console.

"The all-new Kinect is now an essential and integrated part of the platform," reads the Q&A. "By having it as a consistent part of every Xbox One, game and entertainment creators can build experiences that assume the availability of voice, gesture and natural sensing, leading to unrivaled ease of use, premium experiences and interactivity for you."

During the Xbox One reveal event today, Microsoft demonstrated the console's system-level Kinect integration for voice and gesture controls used to do things like switch between games, apps and live TV.