com - illustrative purposes only, not the actual person Self-checkout was initially invented to lower labor costs, reduce lines, and make checking out faster, but for many of us, it can be more problematic than easier. Kate was at Walmart grocery shopping one day, and she was left appalled by what happened when she paid and then tried to leave the store. A female employee came up to Kate, nearly running, and accused her of failing to scan one of her items. A video popped up on the screen in front of Kate, showing her scanning the item in question. “So she starts pulling my little couple of items out of the bag and, like, going through every single one of them, and then she’s like, ‘Oh, I’m sorry, yeah, you did scan it.