Mobile security system and method for a vehicle

A mobile security system for use in a vehicle is provided. A mobile phone is coupled to the engine immobilization circuitry that of the vehicle. Upon receiving an authentification generated by the mobile phone after the mobile phone is fixed to the vehicle's infrastrucure, the authentification disables the engine immobilization circuitry to start the vehicle. Furthermore, the mobile phone executes an emergency function if an emergency situation happens. Thus, a reliable and quick response of rescue force mobile security system is provided.