A light alternative to tracking mobes
The practical limit to tracking a smartphone-owner’s movements in real time – beneath the resolution of GPS and associated location-tracking technologies – is the sensitivity of the motion sensor. Researchers at Caltech say they’ve taken a step towards very fine motion sensors, using nano-scale waveguides.…
via The Register - Networks
http://go.theregister.com/feed/www.theregister.co.uk/2012/10/18/caltech_optical_accelerometer/
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