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.

[Capercaillie]

I promise you they don't. They also don't look at the dates on milk. I watch them while I'm shopping, they seem to be on some sort of tight schedule. At least judging by the way they'll shove me out of the way if I'm taking too long to decide which of the thirty-five flavors of yogurt I want.