This document summarizes the history and components of the Kinect motion sensing input device. It traces the origins and development of Kinect from 2005 with its introduction by Microsoft in 2009. It describes the hardware components of Kinect, including its camera, infrared sensors, and microphones. It also discusses the different versions of Kinect for Xbox and Windows and the Kinect software development kit (SDK). Finally, it outlines some applications of Kinect and its advantages and disadvantages.