Google unveiled Project Tango, an experimental project from Google's Advanced Technology and Projects (ATAP) group to develop smartphones and tablets that can track motion in 3D and map environments. Project Tango devices use advanced sensors and computer vision to give mobile devices a human-like understanding of space and motion. The Project Tango prototype is an Android device that can create a 3D model of its surroundings without GPS or other external signals by tracking its own 3D motion and the infrared light it projects.