"Location fixes by cellular triangulation are nothing new, of course, but they’ve never been as accurate as GPS. Until now. GloPos’ “secret sauce” is in its location algorithm, which sends small amounts of data — as little as 100Kb — from a standard phone to a server that returns a precise location within milliseconds. The patent-pending technology offers positioning to within 1-40 meters, including indoor and underground locations." - Alan Cheslow from Bookmarklet