Google Plans to Map the Interior World in 3-D - Bloomberg

See the Project Tango site for more details

"Tango packs cameras and depth sensors along with other software into Android smartphones and tablets. Fire up the application and point the device at a space and it sucks in images and depth information to re-create the environment on the screen and locates itself within that new digital realm.
Google hopes Tango will support a system for independent developers to create new virtual reality applications and services. Video games could have characters that hide behind real-life furniture. A museum app could show 3-D animations when you walk past an exhibit. A grocery store could highlight sale items and guide shoppers to the right shelf."

Google Plans to Map the Interior World in 3-D - Bloomberg