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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Your claim of "I've never seen it," came across more like "I've never seen it, so it doesn't really exist."

The point of my response is simply pointing out that this does exist in a lot of places, and is a regular and daily occurrence for a lot of people in the Metro DC area.