Google, Lenovo’s Project Tango smartphone: All you want to know

Google already has released experimental Tango devices designed for computer programmers, spurring them to build about 100 apps that will work with Lenovo’s new phone. Suppose your smartphone is clever enough to grasp your physical surroundings – the room’s size, the location of doors and windows and the presence of other people. What could it do with that info? We’re about to get our first look. On Thursday, Lenovo will give consumers their first chance to buy a ph