This document discusses Google's Tango project and virtual reality technology. It provides details about Tango, a platform developed by Google that enables mobile devices to detect their position without GPS by making over 1.4 million measurements per second. Applications of Tango mentioned include indoor mapping, navigation, and game development. The document also discusses virtual reality, how the HTC Vive was recognized as product of the year for its work in VR, and potential applications of virtual reality in areas like business, training, and engineering/design.