Tap-to-pay on credit card chips, too.
johntwinkletits@lemmynsfw.com 1 month ago
Definitely 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.
isaaclyman@lemmy.world 1 month ago
SynAcker@lemmy.world 1 month ago
Not 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.
johntwinkletits@lemmynsfw.com 1 month ago
Those were cool!