Computer Science for IGCSE & O level - Hardware (Section 4 - No. 30)
In a barcode system, what are the advantages to the customers?
Easier and faster checkout queues.
The customer is given a printed receipt.
No cash is required.
The barcode scanner does not need to be cleaned often.
Paaiškinimas
The text states that customers benefit from faster checkout queues and printed receipts.