Features:
1. Sequential Number
The card numbers are continuous, which is easy to manage and identify. In some scenarios where a large number of cards need to be managed in an orderly manner, such as corporate attendance, campus card, etc.
2. Anti-copying
Special encryption technology is used to make it difficult to copy. This can effectively prevent others from illegally obtaining permissions by copying cards, ensuring the security and reliability of the system
Working Principle:
Encryption Authentication: Some anti-copying serial number ID cards use encryption chips, such as JH4102 low-frequency encryption card. After the card is written with ID, it supports key login authentication before accessing its ID number. The card reader first sends a "login" command. After the key authentication is passed, the card will send the ID number information, otherwise no data will be sent. In this way, only authorized card readers can read the card information to prevent illegal copying and reading.
Unique Serial Number: The manufacturer has solidified the unique serial number in the card chip before the product leaves the factory, which cannot be changed. This serial number is like a person's ID number, which is a unique identifier for each card. The card reader identifies the identity of the card by reading this serial number, thereby realizing the authentication and authorization of the card.
Application:
Access control system: In the access control management of residential areas, office buildings, factories and other places, the use of anti-copying serial number ID cards can effectively control the entry and exit of personnel.
Attendance system: Enterprises or schools can use anti-copying serial number ID cards for attendance management. Employees or students record attendance information by swiping the card. The serial number function makes it easy to classify and count personnel, and the anti-copying feature can prevent others from forging cards to cheat on attendance.
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