A ground-based system that uses much stronger signals than GPS can pinpoint your location in cities and indoors down to within 2 to 6 inches
Instead of satellites, Locata uses ground-based equipment to project a radio signal over a localised area that is a million times stronger on arrival than GPS. It can work indoors as well as out, and the makers claim the receivers can be shrunk to fit inside a regular cellphone. Even the US military, which invented …