The best part of self checkout is the 0% chance of getting behind someone who is writing a check, using multiple gift cards or counting out all the pennies.
I dunno why some grocery stores don’t do this but most in my city have a single line that feeds all the checkouts.
We had that at one store and then they got rid of it. I think the long looking queue put people off but it moved so quickly. Was much more efficient.
I remember Frys Electronics (RIP) used to do that.
Fry’s knew that single queue multiple server had lower waiting time variance before everybody else in retail did. No surprise that John Fry funded the American Institute of Mathematics!
Kohl’s, Barnes & Noble, Ross have single queues
Microcenter still does.
The worst part is that everyone is infuriatingly slow at self-checkout.
No slower than standard checkout. Most often, self-checkout is much faster.