I suspect physical security in terms of keyholding is less fragile for people's house keys than it might seem on first blush. They're mostly in your pocket when

I suspect physical security in terms of keyholding is less fragile for people's house keys than it might seem on first blush. They're mostly in your pocket when you're out and about. That said, you can stick many doors through in some parts of the world by simple expedient of giving them a swift kick. People don't seem overly concerned. So I suspect even if it proved simple to get pictures, it would have to be horribly abused before people did anything about it.