Mixed Signals: Smart Phone Sensors Recruited to Deliver Indoor GPS
Monday, July 2, 2012 - 07:50
in Earth & Climate
Global positioning system (GPS) devices may not always provide spot-on directions, but they do provide drivers, cyclists and hikers with convenient access to digital map data of every square meter of the planet shadowed by satellites. Step indoors and you will find that same GPS receiver becomes an expensive paperweight. [More]