Ever since The Minority Report was released in 2002, gesture-based computer control has been compared to the NUI features shown in the movie. Sure, the Nintendo Wii came out in 2006 with built-in motion control, but it still required the user to hold a controller in their hand.
Minority Report, from Dreamworks Pictures
Fast-forward to 2010, the original Kinect was introduced as an Xbox 360 accessory. This brought gestures and voice control to a home console like never before. In 2012, Microsoft released Kinect for Windows, which allowed any hobbyist developer to build an app or game for Windows using a slightly-modified version of the Kinect.