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What's the difference between uid and cuid? I believe that many inexperienced people are at a loss about this, so this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

The differences between uid and cuid are: 1, UID responds to backdoor instructions, CUID does not respond to backdoor instructions; 2, UID card ID can be changed and use backdoor instructions to change ID,CUID cards ID can be changed and ordinary write instructions are used to change ID.

The difference among UID card, CUID card and FUID card

UID card (known as GEN1 abroad)

All blocks can be read and written repeatedly

The card ID can be changed and the ID can be changed using the backdoor instruction

ID can be modified repeatedly

Respond to the backdoor instruction (which means it can be detected by the machine that uses the backdoor instruction to detect whether it is a cloned card)

CUID card (known as GEN2 abroad)

All blocks can be read and written repeatedly

The card ID can be changed and the ID can be changed using ordinary write instructions

ID can be modified repeatedly

Do not respond to backdoor instructions (which means it is not easy to be detected by anti-cloning systems)

FUID card (known as GEN2 abroad)

Block 0 is writable and can only be written once

Use normal write instructions to change ID

More "anti-cloning"

After reading the above, have you mastered the difference between uid and cuid? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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