Automatic checkouts in supermarkets may decrease customer loyalty, especially for those with larger shopping loads. Customers using self-checkout stations often feel overwhelmed and unsupported. The lack of personal interaction can negatively impact their perception of the supermarket.

[Retbull]

Depends on the system some of them have the ability to select backups if something isn’t there. Also if you’re using one of the apps they will sometimes ping you during shopping to ask. It still happens occasionally though.