We got our hands on the Zenfone AR and we are eager to share our first impressions. The most important thing you must know is the device is equipped with Tango, the Augmented Reality platform that adds an information layer on top of the physical surroundings in 3D using a set of cameras on the back. Tango is Google's technology and Asus are only the second manufacturer to make a phone with it - the first one was the Lenovo Phab2 Pro, which we reviewed recently.
Source: http://www.gsmarena.com/ces_2017_asus-review-1546.php