this post was submitted on 26 Jul 2024
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219
Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devices (www.tomshardware.com)
submitted 3 months ago by [email protected] to c/[email protected]
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cross-posted from: https://lemmy.ml/post/18426215

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[–] [email protected] 2 points 3 months ago* (last edited 3 months ago) (1 children)

Technically, a properly tuned receiver that's using the signal for power can create radio "shadows" behind the device. People have also been caught with giant coils in their attic siphoning power from nearby radio stations and high voltage power lines, because they can detect the power draw.

[–] [email protected] 2 points 3 months ago

They… have? Have a source? That sounds nuts!