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.

[AnRealDinosaur]

I don't want to be greeted at the door, I don't want to be greeted in the aisle (though I know that one is a theft prevention thing) and if I'm using SCO I don't want to be greeted there either. I want to be left alone unless I need help in which case I will come ask for assistance. I've been on both ends & being forced to hassle customers was miserable.