If you notice here in the photo above, in light blue is the front counter area for serving customers. Where the circle in green is, is the receipt printer.
Once they served the customer, the receipt printer prints a receipt. To get their receipt, the customer has to leave the front counter area and go to the receipt printer.
This gives some advantages.
1) It makes the customer move away faster from the front counter, so speeding up the traffic flow.
2) The person serving now does not handle the receipt, a big plus in our COVID world.
3) It increases the size of the front counter so allowing more impulsive stock to be displayed.
Have a chew and tell me what you think?