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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/technology

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cross-posted from: https://lemmy.ml/post/18426215

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[–] Orbituary 5 points 3 months ago (3 children)

This is the same take as people thinking wind energy steals wind, or solar energy reduces the sun's efficacy.

[–] [email protected] 10 points 3 months ago (1 children)

Wind energy does.

It's just that we can't extract sufficient energy from it to have any meaningful impact.

[–] Orbituary 2 points 3 months ago

Exactly my analogy.

[–] [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!

[–] [email protected] 0 points 3 months ago

You are confusing what i am talking about. See my other response.