1. Principle of chip key anti-theft
The automobile electronic anti-theft system communicates with the engine control computer, and only after the code in the key chip is recognized can the engine be started.
2. Types of car key chips
1. Fixed code: The code is fixed and consists of numbers and English letters (when the engine is started, the data will not change)
2. Rolling code: Each key has a different electronic code, but every time the key is used to start the vehicle engine. The code will be changed. The program to change the code is only known to the chip controller manufacturer, and it is difficult to crack by reading the memory of the chip.
3. Encryption code: The encryption code is used for the latest chips and chip controllers (using two-way data encryption). It is equipped with an internal program algorithm to crack the encrypted information each time.
