10/20PCS UID Smart Chip Card 13.56Mhz Clone Token 1K S50 Rewritable Key NFC Changeable Tag Gen1 ISO14443 Clone Card

UID works the same as ordinary IC cards and is suitable for Mif 1K S50 standard. Only the sector 0 block of zeros (called the serial number/manufacturer block (chip UID)) can be programmed to any UID you want.

Note: NFC on mobile phones supports writing to cards, but it is relatively unstable. Usually we recommend using RFID reading and writing devices to read and write cards.

1. UID card block 0 (UID block) can be modified arbitrarily.
2. Block 0 is modified directly with ordinary mif reading and writing equipment.
3. The default password of the card is 12F,FFFFFFFFFFFF