Or just unplug the pedal commanderThis is one of the selling points for Pedal commander: Even with your own keys or keyfob, Pedal Commander®'s anti-theft makes it impossible for anyone to steal your vehicle. It just takes one tap on your smartphone to activate the Pedal Commander® anti-theft! By initiating the anti-theft from the Pedal Commander® app, you can lock the gas pedal completely whenever you want. It prevents anyone to start our vehicle or drive off with it--only you can turn off the mode and get the throttle pedal working again.
You can of course use a battery cutoff or fuel line cutoff but I think the pedal commander app works the best.