A week of fumbling through the mist of finding out about sensors, gps, software in mobile phones, hidden electronic and data information in a city.
that a GPS, which is a device that locates you in space and time with the help of satellites , can get you really lost. They tell you that you move at a speed of 50 km as you are standing still at a street corner. Satellites are not always sure where you are and make your position bounce rapidly back and forth as signals reflect in a city.
that a GPS needs some time to wake up after it was out of signal, first than it will relocate you.
that "dead"satellites may cover the sky and not allow signals to go through, thus blocking the sky.These satellites are a kind of waste, that nobody knows what to do with.
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