In the meantime a number of large supermarkets in the UK let you scan everything as you drop it into your trolley, and just pay at the end. A nice middle ground

In the meantime a number of large supermarkets in the UK let you scan everything as you drop it into your trolley, and just pay at the end. A nice middle ground until, as you say, supermarkets disappear. http://www.tesco.com/scan-as-you-shop/ http://www.tesco.com/scan-as-you-shop/ is one example