This document describes a security feature for automobiles that is implemented using the CAN protocol. It discusses how modern vehicles contain many electronic control units connected via CAN networks to control various systems like engine management, entertainment, lighting, and more. The proposed system adds security features like vehicle theft prevention, location tracking if stolen, and automatic engine shut off in emergencies. It requires hardware like a PIC microcontroller, GSM and GPS modules, and software to design and code the system using tools like Proteus and MPLAB IDE. The system is intended to improve vehicle security and safety.