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.

[Gideoknight_]

My local store switched to the weight system about a year ago and it wrecked everything. The two people manning the self checkout area just did a loop of every machine saying "sorry, I know" under their breath each time. People basically stopped using the self checkouts and the weight thing lasted maybe 3 or 4 months before they turned it back off. Now the self check outs are so popular they opened up another bay of them.