Oh thanks for the details. It wasn't something I felt compelled to read and just vaguely recalled existing. I'm slightly surprised they don't have internet these days. Obviously it would be an entire extra can of worms for security but manually patching each one sounds awful. I also saw in another comment someone said they are battery powered which makes it an even less appealing system. I'd feel inclined to make them bolt the other way and have the card and lock unit on the frame side and have them connected to a wired network routed through the wall and powered by mains also. Maybe there's some super obvious reason locks go from the door to the wall that I never thought to look in to though.