The difference between the imported S50 and the domestic M1 chip

Smart card manufacturingThe main chip technologies of the imported S50 are as follows:
1: Before password verification is correct, all data is readable. If necessary, data can be appropriately encrypted and then written or modified after password verification is correct

Data.
2: The 3-byte user password remains valid until the card is powered off after verification passes. After verification, the password itself can be changed. Note the password area separately

Address, not within 0~256 bytes.
3: The password error counter starts with binary 0111. If the password checks once, one 1 is subtracted. If the counter value is 0, the card will automatically lock

data can only be read and cannot be verified for password verification, so it cannot be changed. When the counter is not zero, the password verification is correct, and the password is restored

Return to the initial value.
4: Each byte in the write-protected area (the first 32 bytes) can be written separately. After write protection, the content cannot be changed (i.e., the fixed number).

According to the law).
5: The byte address 0x15 as the user code. SIEMENS can set a globally unique code for large users here, so users can unify distribution

Use.
6: Byte addresses 0~7 are already written by the manufacturer before leaving the factory.
    This 4442 contact IC card is mainly applicable in medical and health fields, such as hospitals and health centers.

Smart card manufacturingThe main technologies of the domestically produced M1 chip are as follows:

1: Fully compatible with PHIlips Mifare One S50 IC card
2: Capacity is 1025 bytes EEPROM
3: Divided into 16 sectors, each sector is 4 blocks, each block contains 16 bytes, with blocks as the unit for access.
4: Each sector has its own set of passwords and access controls.
5: Each card has a unique serial number, which is 32 bits.
6: Features anti-conflict mechanisms and supports multi-card operations.
7: No power supply, built-in antenna, includes encrypted control logic and communication logic circuits.
8: Data retention period is 10 years, allowing for 100,000 rewrites and unlimited reads
9: Operating temperature -20°C~50°C (humidity 90%)
10: Operating frequency is 13.56MHZ
11: Communication rate is 106KBPS
12: Read/write distance within 10cm (related to the reader/writer)

    So there is still some difference between them; only professionals can know these things, not just professionals

The imported S50 is just a bit better than the domestic M1.