Not really as far as I was aware as it work(ed) on devices without a GPS fix or hardware. Used accelerometer signals, radio signal strength, as many signals as

Not really as far as I was aware as it work(ed) on devices without a GPS fix or hardware. Used accelerometer signals, radio signal strength, as many signals as they could get as I recall. I remember hearing they were even emitting an inaudible tone so that devices in vicinity could pick it up. Dunno if that was actually the case though. http://www.google.com/patents/US20110191823 http://www.google.com/patents/US20110191823 Looks like they took out some patents on fixed buttons as well. http://www.google.com/search?tbo=p&tbm=pts&hl=en&q=inassignee:%22Bump+Technologies,+Inc%22&num=10 http://www.google.com/search?tbo=p&tbm=pts&hl=en&q=inassigne...