Over the past year Google has been working research partners across nine countries around the world to harvest research from the last ten years of work in robotics and computer vision, bringing all of that technology into a mobile phone. Project Tango will give mobile devices a 3-D human like understanding of space and motion. Your mobile device will be able to scan parts of a room or office and bring this to life within your mobile device. The possibilities are endless!
You can check out more @ ATAP Project Tango