FWIW there are times when you want to secure the car but have a mobile participant inside the car (and the car has interior sensors that detect movement). Pets

FWIW there are times when you want to secure the car but have a mobile participant inside the car (and the car has interior sensors that detect movement). Pets and small children come to mind. There are cases (such as filling up at a petrol/gas station) where you want to secure them temporarily in the vehicle while paying but don't want movement setting it off.