The range of your projection depends on what camera you are using and how far away you can mount it from the projection surface.
Projector size calculator
Figure out your display size with Projector Centrals Projection Calculator and get recommended throw distances, room lighting, screen brightness, seating and projector placement. They also have an app for IOS devices.
Camera installation distance calculator
Calculate your camera installation distance using our Projection and camera calculator.
The maximum area that you can cover is around 17 ft x 15 ft (5 m x 4.5 m) with the sensor mounted 19.5 ft (6 m) above the projection surface.
Kinect for Xbox One
The maximum area that you can cover is around 19 ft x 16 ft (5.8 m x 4.8 m) with the sensor mounted 15 ft (4.5 m) above the projection surface.
Web Cameras are more flexible for distance, but they do not track as well and are not recommended for floor installations.