To me, self-checkouts are best as replacements for the express checkout lane. You've got a few things in your hands, probably don't even need a basket or cart,

To me, self-checkouts are best as replacements for the express checkout lane. You've got a few things in your hands, probably don't even need a basket or cart, and just scan them through, and you're out. When doing a full shop, a person is preferrable.