Indoor GPS Is the Final Frontier of Personalized Navigation

 Labs in the U.S. and U.K. are working on next-generation GPS that’s so cool, it won’t even use satellites. It will instead take location cues from subatomic variations in the earth’s magnetic field.This is good news, especially given the imminent arrival of self-driving cars. We don’t want a GPS satellite to go dark years from now, leaving thousands of driverless cars in California circling the streets as if stoned out of their gourds: “Dude, did we pass the McDonald’s, like, two minutes ago or two hours ago?” The new “quantum GPS” will also fit on a microchip and require little power, which means it can be built into everyday items, not just smartphones. It will be so accurate it could pinpoint an item inside your house to within inches.

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