This Car security device is designed to combat and protect vehicles from the Hi-Tech theft of cars by decoding and duplicating wireless keys. The device is a self contained Siren with alarm circuitry built inside. It operates independently from any other Vehicle Alarm devices or control units. The alarm is automatically activated and deactivated when the driver leaves and returns to his vehicle, this is done via a simple mobile phone App which will also allow the user driver to register up to 32 vehicles fitted with the alarm units. Each vehicle alarm unit installed can be automatically controlled by an unlimited number of drivers.