Clipper cards use NFC, and there's at least some encryption protecting them - I don't believe they can be copied and spoofed the way common RFID tags can. http

Clipper cards use NFC, and there's at least some encryption protecting them - I don't believe they can be copied and spoofed the way common RFID tags can. https://en.wikipedia.org/wiki/Clipper_card#Technology https://en.wikipedia.org/wiki/Clipper_card#Technology