This coil card works the same as the normal IC cards, for Mf1 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.
1. UID coil card block 0 (UID's block) can be modified arbitrarily.
2. Block 0 directly with normal mf read-write device modification, don't need special equipment.