Security measures..
I was in superstore today buying one item. I had a cart with me because it’s easier to keep my 2 kids contained. After paying I left and the beeper went off and my cart locked. It just seemed a bit ridiculous to lock the cart. I obviously didn’t take anything and it felt very weird to be treated like a criminal.
(I typically don’t shop at superstore but I was in a rush because I had to be home in time for my husband to go to his night shift, and superstore was the closest store to my house).