The new Kinect can track gestures, read a player’s heart rate by looking at his or her face, and respond to verbal commands. It must be plugged in for the Xbox One to operate, though the entire system can be turned off to alleviate concerns that it might spy on people.
http://www.nytimes.com/2013/05/27/a...to-next-generation-of-consoles.html?hpw&_r=1&
Took them long enough