The front door lock is actually a bad example: in single-family houses, the front door is a social and legal signifier more than it is a security device. Smash

The front door lock is actually a bad example: in single-family houses, the front door is a social and legal signifier more than it is a security device. Smash a window; go around back; use a crowbar: the lock isn't what's keeping you out, it's designating the social expectation that you don't have a right to be there without an invitation and the legal assertion that crossing the threshold violently is a bigger crime than wandering in absently. This case is more like a golf cart being sold as a car: it's technically usable for that, but lacking any sort of safety or weather protection.