Last Monday when I went at the grocery shop, I was surprised with the new self pay counter area where all are in modern techno including the usb barcode scanner. I was really curious about it and so I tried to pay at that counter.
It was so easy to use by just following the instruction on the computer monitor. Everyone was also assisted by the employee whenever they need help. I find this new gadget very useful specially when there are many customers on the shop. What a great invention for this.