SynAcker@lemmy.worldtoTechnology@lemmy.world•Researchers discover battery-free technology which harvests power from radio and Wi-Fi signals for low-powered devicesEnglish
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4 months agoNot new indeed. Kinda reminds me of old Nextel phones that you would put a little LED on the antenna and it would blink from the EMI when sending and receiving data.
Get an annoyatron and put it in the ceiling above their desk.
What is an annoyatron, you may ask? It’s a tiny little device that beeps or chirps. That’s it. But it beeps at random several minute intervals like a dying smoke detector over it’s battery’s lifetime. Which can last over 3 years…