Kinect

a line of motion sensing input devices by Microsoft for XBox 360 and Xbox One video game consoles and Windows PCs. Based around a WebCam-style add-on peripheral, it enables users to control and interact with their console/computer without the need for a game controller, through a Natural User Interface using Gesture-s and spoken commands (Speech Recognition).[9] The first-generation Kinect was first introduced in November 2010 http://en.wikipedia.org/wiki/Kinect