https://www.adafruit.com/product/1482
13.56MHz RFID/NFC Leather Keychain Fob - Classic 1K : Adafruit Industries, Unique & fun DIY...
This is a blank 13.56MHz RFID/NFC keychain fob. The fob contains a small RFID chip and an antenna, and is passively powered by the reader/writer when placed a...
leather keychain fobrfidnfcclassicadafruit