A new GPS piloting equipment for the blind that use the European Space Agency ’s system of geostationary satellites to better the truth of GPS in cities to within a few meters . Being off by fifteen or twenty meters is n’t such a big deal while repulse in a car , but for a blind person trying to find their fashion around town that spirit level of inaccuracy ( which is apparently spoiled in city because of obstacle like tall buildings which jam the GPS signal ) is a veridical problem . The TORMES GPS pass receiver has a Braille keyboard , a interpreter synthesiser which can say users what building and intersections they ’re nigh , and GPRS for connecting to the cyberspace .
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