Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devices

Applications would result in less dependency on batteries in low-powered devices

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Uhm, how is this fundamentally different from a crystal radio? I've built this exact concept from a science kit, and this is a concept that's been proven for decades.
- It's...not. The original press release is typically hype-y, but the part that toms hardware article really mangled is that they didnt find a way to do it, they found a new design for a device to do it.

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