Question

A coffee shop near your house has long queue because the salesman at the counter enters the product code of each item into the computer using his keyboard before selling it to the customer. Can you suggest a device that can shorten this process

Answer 1

now a days scanner is used for this purpose.

Answer 2

NOW A DAYS THERE ARE BAR CODE SCANNER ARE USED IN SHOPPING MALLS.....
SO THE SALES MAN CAN USE THIS BAR CODE SCANNER TO SHORTEN THE TIME