What do Rolling Stones guitarist Keith Richards, film ...

The new Global Positioning System is made up of two vibrating rings that people can wear on their fingers to guide them round a city. If people are not sure about getting around in a new city all they have to do is program the GPS with the postcode of their destination. The idea is to wear one on each hand. Then for example the one on the left hand buzzes when you should go left. And if you're ... ................
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