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How to Install a Ghost Immobiliser A ghost immobiliser is a hidden security device that protects your car from key cloning and hacking. It stops the engine from running until a PIN number is entered. This can be as long as 20 characters. This extra layer of protection isn't visible to thieves who are unlikely to be aware of it. Certain systems also come with an app that allows owners to disable the immobiliser if they forget their PIN code, or to use the service/valet mode. Connecting the vehicle's CAN Bus The