If there's a common barrier to playing with a Kinect controller, it's free space. The sheer amount of necessary distance between sensor and player is fine for suburbanites with expansive living rooms, but not so hot for apartment dwellers. Thankfully, BitGym is doing its best to bring hands-free gaming to small spaces with a new Motion SDK for Android and iOS developers. The kit takes advantage of the front cameras on phones and tablets to track three-axis movement, leans and multiple players without any special hardware -- and without nec
