This card works the same as the normal IC cards, for 1K S50 standard. Only the Sector 0 Block Zero which is known as the Serial Number/Manufacturers Block(Chip CUID) could be programmed to any UID you want.

Specification:

1,CUID card block 0 (UID's block) can be modified arbitrarily.

2, block 0 directly with normal mif read-write device modification.

3, card of the default password for 12 F,FFFFFFFFFFFF.

Support NFC android phone App MCT modify UID


Specifications :

Chip: CUID
Diameter: 40MM
Frequency: 13.56 MHz
Protocol: ISO14443A
Capacity: 1k bytes EEPROM memory
Rewrite Times: 100,000 times
Read Distance: 0 ~ 10 cm(depends on the Reader)
Material: PVC
Initial Key: FFFFFFFFFFFF (12F)
common 13.56 mhz rfid reader writer and nfc phone can not write the particular cards!
Usually we use the NFC reader writer, super reader ,PM5/Pro,300CD, Proxmark3,iCopy3/5/8 to write a specific card.

Confirm your purchase before you write the default machine to support a specific card.

The difference between UID card and CUID card

UID card：

Ordinary copy card, you can repeatedly erase and write 0 sectors, it is mainly used in IC card copy, it will fail if it encounters a card reader with a firewall.

CUID card：

The rewritable anti-shielding card can repeatedly erase and write 0 sectors. It can be used when the UID card copy is invalid, and the firewall can be bypassed.(90%)