CUID Gen2 Rewritable NFC Tag 1K 13.56MHz Block 0 UID Changeable M1 S50 Compatible for Door Access Android MCT Access Control

CUID Card MCT SupportableThe products are as follows:1. UID card block 0 (UID block) can be modified arbitrarily.2. The default password of the card is 12F, FFFFFFFFFFFF.3. CUID supports mobile phone NFC android App MCT to modify UID. (The MCT of some mobile phones is unstable and may cause writing failure. Generally, we still recommend using an RFID reader for reading and writing)The difference between UID card and CUID card.UID card:Ordinary copy cards can repeatedly erase and write all sectors. They are mainly used for IC card copying. They will fail when encountering card readers with firewalls.CUID card:The erasable and anti-shielding card can repeatedly erase and write all sectors. It can be used when the UID card copy is invalid and can bypass the firewall.