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‘Passive Wi-Fi’ uses 10,000 times less power than normal to save your phone battery

Your smart devices are always virtually hopping around trying to connect to Wi-Fi, which is great for when you want to surf the Web but it hammers your battery. Now a team of researchers from the University of Washington has created what they’re calling a Passive Wi-Fi system that uses almost no power at all by transferring typically power-consuming analog activity to a single hub plugged into the wall.
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