My anti theft setup is part of a safety system. I have an Accusump accessory oil tank that is pressurized and if the pressure falls for any reason it pumps three quarts of oil into the engine. As the pressure returns to normal it pumps the oil back into the tank. If it falls lower, then the ignition shuts down, hopefully saving the engine.
The anti theft part of this setup is that without oil pressure it won't crank. So if someone manages to get power to work it still won't crank. There is a bypass switch that is hidden on the dash between the front of the door facing the dash and the dash. To get to it, the door has to be open(partially). The system can be wired so that on fist position of the ignition key, the tank will empty its oil into the engine and essentially pre oils the engine to eliminate dry starting.
Bill