A few recent unrelated supermarket experiences from me.
I was in Aldi recently and they have changed their self-service tills to fix one of my longstanding bugbears. You can now tell the checkout that your bakery paper bag contains multiple different types of item. e.g. 1 Pretzel and 2 Apple turnovers, and then place them all on the scales a once. I wish other supermarkets would adopt this. Even better, get rid of the stupid scales altogether, as whenever they alert, a staff member in any supermarket will just override it without checking anyway.
I also learnt of this new idea of scanning your reciept to open the exit gates. It seems more like security theatre to me, given how you could just not scan some items. Unlike railway ticket gates, I'm not aware of any bylaws against using them incorrectly though.
I tried a new online service called Bother recently because they had some discount codes. It only sells things with a long shelf life, so no fresh or frozen produce such as fruit, veg, milk or bread. The product range lends itself to heavy things such as tins and cans, which are all dispatched floating around loose in a box via DPD. I guess you can imagine the state of the tins when they arrived. Since they only sell branded items, its more expensive than a real supermarket too, and since you'd have to place another order to a real supermarket anyway for your fresh stuff, why not just buy everything from a real supermarket at the same time? I sometimes wonder who comes up with these business plans!