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Google already maps the world, but the internet giant has bigger plans for its next location-based technology.

The Alphabet Inc. unit wants to digitally map the interiors of buildings in 3D down to a resolution of a few inches, and make money in virtual reality along the way, through a project named Tango.

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The company plans a big expansion of the technology this year and ultimately wants to make it ubiquitous, according to a person familiar with the situation. Job postings and recent updates to Tango’s developer software show steps toward this ambitious goal. Google will showcase progress at its I/O developer conference near its Silicon Valley headquarters May 18 to 20.

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.