Thank you; a mantrap was exactly what I was trying to describe in my other comments, but didn't know the word for it. It's not true that a 7-11 doesn't have ro

Thank you; a mantrap was exactly what I was trying to describe in my other comments, but didn't know the word for it. It's not true that a 7-11 doesn't have room for a mantrap; remember that an unmanned store doesn't have a cash register / checkout counter, or any space behind such for a person to stand. A manned store could be retrofitted into a secure unmanned store by installing the mantrap entrance into exactly that area.