Seriously, I wasn't even through the second paragraph before I thought the same thing - just take the thing with you. It doesn't try to solve the OCD, but it solves the problem. Nobody in my household has OCD, but we had a garage door that sometimes, unpredictably, would decide that there was an obstruction at the very bottom, and go back up. Did you really, really watch it go all the way down before driving off? Did…
Haven't worried since