GPS rival Navsop navigates by Wi-Fi, TV signals
Defense firm BAE Systems reckons the technology will be the size of a coin -- but it isn't quite ready to fit in your phone just yet.
GPS could drop off the map as British boffins work on a new location technology that navigates by signals from mobile phones and Wi-Fi. Defense firm BAE Systems is testing Navsop, a navigation system that goes where others can't.
Navsop figures out where it is from a GPS signal, then learns about different signals including medium-wave radio frequencies, mobile phones, televisions, and Wi-Fi to find its way around.
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