What do the numbers on the barcode of a new car key represent?

[DeAdriana]

This barcode is primarily used for key matching, essentially serving as a "plaintext" password-like data (or the vehicle's ID card). The purpose of the barcode: Individuals should keep it safe. If the car owner loses the key and needs to get a replacement, this barcode is required. The 4S store can use the barcode to retrieve some of the vehicle's password information, which is relatively straightforward. If this barcode is lost: It can be matched via another key (after-sales service); If all keys are lost (including the barcode), an application can be made through after-sales service (such as using a security code). Once the rematching is completed, the previously lost key will become invalid.