The Ghost by Autowatch is the world’s first immobiliser that secures your vehicle without having to carry any extra key fobs. Vehicle is immobilised until a pin is entered using the original buttons in the car.
On newer vehicles the gearbox / transmission is integrated with the immobiliser, if the transmission were to be replaced it would need ODIS diagnostics to pair up all modules. The same applys to other modules too such as the Instrument cluster.