Can the same car key unlock the same model of car?

[DelMelanie]

Theoretically, no. But in reality, there have been cases where a key opened someone else's car door. However, don't worry—modern car models use rolling code anti-theft systems, with each vehicle having a unique security code. Even if the door can be opened, the car cannot be driven away. Below is relevant information: Car Anti-Theft System: A car anti-theft system is designed to prevent the theft of the vehicle itself or items inside it. It consists of an electronically controlled remote or key, electronic control circuits, alarm devices, and actuators. Types: With advancements in technology to counter increasingly sophisticated car theft methods, various types of anti-theft devices with different structures have been developed. These devices can be categorized into four main types: mechanical, chip-based, electronic, and network-based.