Antitheft devices, which just break electrical circuits, can easily be manipulated once the connections are found! It has been shown often enough in television!
What sort of special manipulation protection does VOCAL SCW 1 offer?

It is not quite that easy to find the control unit behind the enclosure, then to bridge all three circuits (ignition, fuel pump and starter) with leads and start up the car.
These “Extra Locks” make the car uninteresting for thieves. There is too much time involved and the risk is too great. Maybe the next car does not have a VOCAL SCW 1 yet.