ITEM NAME:10 X UID Card 13.56MHz Block 0 Sector Writable IC Cards Clone Changeable KeS Hn UID Changeable 1k 13.56mhz Card UID works the same as the normal IC cards, for Mif 1K S50 standard. Only the Sector 0 Block Zero which is known as the Serial Number/Manufacturers Block(Chip UID) could be programmed to any UID you want. Note: Android MCT won't work with UID 1, UID 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 INCLUDES:10pcs.UID Changeable 1k 13.56mhz Card. 1, UID card block 0 (UID's block) can be modified arbitrarily. Note: Android MCT won't work with UID.