At this year's Consumer Electronics Show in Las Vegas, Google and Lenovo announced that they're partnering to build an Android-powered smartphone powered by Google's Project Tango technology -- technology that can, if successfully implemented, give smartphones and other devices "the ability to perceive depth and space the way humans do," Business Insider reported.
What exactly does that mean? Well, once the sensor is more prevalent in our phones and automobiles, apps will have the ability to "read" where the human hand is in 3-D, which means people can interact with digital objects in virtual or augmented reality with their own hands. In practical terms, it means we can control technology without physically touching it, as demonstrated at left.