h a l f b a k e r yA few slices short of a loaf.
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Make them active, and they could record the passage of every vehicle, and be 'swept clean' by an inspection vehicle. I expect they could (if they talked to neighbours) check your speed and distance from the previous vehicle. |
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GPS/ satellite navigation alternative that works between high buildings or in tunnels? |
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Con: wanna see a reaally big crash? just throw a dozen RFID security badges onto the road. |
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It could be also a complement to GNSS indicating the exact geoposition of each road beacon. In a far future with enough (not so many) beacons buried on lanes and roadsides this could be an alternative to military minded positioning systems for developing countries and others (90% of people live only on 10% of the territory and we pass over same places again and again).
Same can be used for indoor guiding and navigation (for the blind person, etc).
See www.roadbeacon.com |
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