Google made a post to the Official Google Blog in order to announce that their Project Tango augmented reality phone feature has matured to just ‘Tango’ and is available in the first Tango-enabled phone, the Lenovo PHAB2 Pro. The Tango features allow you to use your phone to create digital objects that interact with the real world. This could be as simple as a digital Slinky going down your real stairs or seeing how a bed would look in your room.
To demonstrate some of these concepts, Google created multiple videos which you may see, embedded below. You can find Tango apps at https://get.google.com/tango/apps/