SMARTRAC 3002530 Clear Wet NFC Inlays BullsEye NXP NTAG210 - 38 mm Circle - 25 Pack

These NFC tags are read/writable so you can change the data as many times as you want. The data can be locked so the tag is read-only. Once the NFC tag is locked, it cannot be unlocked. The NXP NTAG210 comes NDEF formatted by the manufacturer. This chip is a very fast modern chip with good reading range. WARNING: These NFC tags cannot be used on metal, aluminum or electronic surfaces. An on-metal NFC tag should be used instead.