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Cake day: April 10th, 2024
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johntwinkletits@lemmynsfw.comto
Technology@lemmy.world•Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devicesEnglish
59·1 year agoDefinitely not new. This is how RFID tags work. They harvest energy from the transmitter to power the circuitry in the tag to send back a response.
LOL, instantly. What a joke.