Cut to the camera zooming in on said microchip. After Lachey scanned it with his phone, a folder neatly titled “receipts” magically appeared. I switched out the cookies for popcorn. And with that, the ...

That’s the essence of this innovative keychain ‘NFC_temp’ by [bjorn]. This nifty gadget harnesses energy from an NFC field—like the one created by your smartphone—to power itself just ...

Back in 2020, we wrote about Waveshare’s Batteryless NFC e-paper display, which can work without a battery and draws power ...