In 2003, Skyhook pioneered the development of the Wi-Fi Positioning System to provide precise and reliable location results in urban areas.

ENGADGET: Motorola gives Google the boot, turns to Skyhook for location services

But chip makers are having trouble making more precise beams, and the Global Positioning System, which allows people to locate themselves to within a few metres on the surface of the earth, is limited by the performance of its atomic clocks.

ECONOMIST: A new way has been devised to make a peculiar form of matter