UK defence firm BAE Systems has come up with a positioning system that it says "could make GPS obsolete."
It's called Navigation via Signals of Opportunity (Navsop) and uses the different signals that populate the airwaves -- including Wi-Fi, TV and mobile phone signals -- to calculate the user's location. It can find your current position, down to within a few metres.
By: Mark Brown, Edited by: Duncan Geere
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via Wired.co.uk
http://www.wired.co.uk/news/archive/2012-06/29/bae-gps
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