As promised, the Xbox One version of Battlefield 4 will support Kinect functionality when it launches on November 22nd. But what will you be able to do with Microsoft's bundled camera? You'll be able to lean and peek.
The camera will track a player's head position, meaning leaning in real life will let you lean in the game. Polygon says it "makes a big difference" because players won't ahve to strafe out into the open.
Of course, there's voice commands as well. You'll be able to call for a medic, request ammo, and let AI teammates know that you need a ride. You can also thank your virtual squadmates, because it never hurts to be polite to computers.