5/10pcs GEN2 CUID Android App MCT Modify UID Changeable Tag Keyfob NFC 1k S50 13.56MHz Card Block 0 Writable HF 14443A CUID Key

5/10pcs GEN2 CUID Android App MCT Modify UID Changeable Tag Keyfob NFC 1k S50 13.56MHz Card Block 0 Writable HF 14443A cuid KeyThis 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.The product is as follows:1,CUID card block 0 (UID's block) can be modified arbitrarily.2, card of the default password for 12 F,FFFFFFFFFFFF.3,CUID Support android phone NFC MCT modify UID.Note:Common 13.56mhz rfid reader writer cannot write the CUID cards!NFC phone andriod App(MCT)