This reminds me of an interview with a former car thief about securing your car. His point was that home-made antitheft measures are better than the popular commercial ones.
The reasoning is similar to the one presented in the article: car thieves come prepared for the commercial ones and don't have time to figure out where you put the breaker in the electric circuit or how to remove your homemade padlock from the pedals.
My car in high school's cooling fan was wired directly to the battery, and the A/C switch turned it on and off. (Car had no A/C.) I figured that any thief that stole it wouldn't get much further than a mile down the street in the Texas heat.
The reasoning is similar to the one presented in the article: car thieves come prepared for the commercial ones and don't have time to figure out where you put the breaker in the electric circuit or how to remove your homemade padlock from the pedals.