GPS doesn't work very well where there isn't a good view of the sky, so there are various projects under way to use an alternative positioning method indoors - in car parks, for example. Would also be handy in department stores and hospitals! This recent article in the New Scientist is a good place to start.
GPS doesn't work very well where there isn't a good view of the sky, so there are various projects under way to use an alternative positioning method indoors - in car parks, for example. Would also be handy in department stores and hospitals! This recent article in the New Scientist is a good place to start.
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