You haven’t been to Korea then. Their cities are safer than most. In the four years I lived there I never once felt unsafe after dark.
I guess I wasn’t being very clear. I didn’t mean Korea; I meant here in the USA. I can see these becoming popular in the high crime areas simply because it doesn’t put people at risk. I bet the machines can be restocked from the back meaning an actual person doesn’t ever need to be at risk in the store except for maybe a cleaning person who has no access to money or products.
I wonder how they would work things like beer, booze, and cigs. Maybe these vending stores simply wouldn’t carry those kind of items.