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UID, CUID White Card
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UID card is an M1 card. All blocks can be read and written repeatedly (the block where UID is located) and can be modified arbitrarily and repeatedly. This card can modify any sector. As a sub-card copied by I1, it is mainly used in IC card copying. The card ID can be rewritten and the ID can be changed by using back door instructions, however, because some systems can identify the UID card without any reaction after copying (when encountering a card reader with a firewall, it will fail.) In this case, you need to use FID or CUID instead.
Product Details
UID card (also known as GEN1 abroad)
UID card is an M1 card. All blocks can be read and written repeatedly (the block where UID is located) and can be modified arbitrarily and repeatedly. This card can modify any sector. As a sub-card copied by I1, it is mainly used in IC card copying. The card ID can be rewritten and the ID can be changed by using back door instructions, however, because some systems can identify the UID card without any reaction after copying (when encountering a card reader with a firewall, it will fail.) In this case, you need to use FID or CUID instead.
CUID card (also known as GEN2 abroad)
CUID card is a UID card that supports repeated erasing and writing of UID numbers. It can modify 0 sectors indefinitely! Generally, it can replace the ordinary shielding card (FUID). No need to lock card automatically
It does not respond to back door instructions (which means it is not easy to be found by anti-cloning system) and plays an anti-shielding role. It can be rewritten and used without waste cards, and will not start after FUID lock dies.
FUID card (called GEN2 abroad)
FUID card is also a UID card that supports UID number erasing and writing. However, once the FUID card is written into the backup dump file, it solidifies, loses the characteristics of UID card and plays an anti-shielding role. It is a solution card that UID card cannot be used after property upgrade. Non-erasable anti-blocking card. The characteristic of this card is that sector 0 can only be written once, and once written, it becomes m1 card. When CUID copying is useless, it can bypass the firewall and become "anti-cloning". After writing once, it becomes I1 card.
If the machine can recognize the CUID (uid) card, it can only use the FUID(Fuid) card.
UFUID卡
Advanced copy card, which we can understand as a "composite card" of UID card and ETIID card, requires card sealing operation. If the card is not sealed, it is UID card, and after sealing, it becomes I1 card. Sometimes people may write information on the white card but cannot be recognized by the machine. Maybe the machine can recognize the common UID card. You can try the CUID card.
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