Mini PN532 Serial Port NFC Module Card Reader/Writer - (AD90657)

Description:

This is an improved Mini PN532, it is a serial port module, NFC, M1 card reader and replicator; include it in your next electronics project.

Instructions for CUID cards and other card categories:

- 1. M Card: Common IC card. Sector 0 cannot be modified and other sectors can be repeatedly erased. Elevator cards, access cards and other smart card issuers are M1 cards, not copy cards, so they are considered copies.

- 2. UID Card: Common copy card. You can repeatedly erase all sectors if the firewall fails.

- 3. CUID Card: Enhanced replication card. The system that protects the UID replication card can use CUID instead of UID, with a 70% success rate. You can repeatedly erase all sectors.

- 4. FUID Card: Advanced replication card. When CUID replication is useless, sector 0 can only be written once. If written once to an M1 card, replication is successful. After writing, other sectors except 0 can be repeatedly erased.

- 5. UFUID Card: Advanced copy card. It is understood as a UID and FUID composite card. It is necessary to seal the card. Change the M1 card after sealing; the UID card is not sealed.