

Stop & Shop in the US does this (or at least it did? I never used it so I barely pay attention to it lol). There’s like a wall of handheld scanners you can pick up when you enter and a little place on the cart for them to go in. You can scan and bag your stuff as you go and then pay at a special register.
adding on to Noise, if you do end up in a situation where you’re considering buying refurbished enterprise hard disks, know that they are louder than normal consumer drives, esp if you have 4 of them running at once in a NAS