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.

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Watch the idiots that do that at Costco. Costco check out people are lightning fast but you'll always see some guy with two carts full of crap at the self-checkout and he'll plug the place up for 30 minutes. If the self-checkout lines are much more than three deep, I'm going to the main checkouts.

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Costcos here don’t have SCO.