In the Opencart Point of Sale System, the admin can set the barcode configurations as shown in the image below. 
The admin can choose either to print the barcode or if necessary, regenerate the barcode for a particular product. 
Using a barcode reader, which is an electronic input device using which the sales agent scans the barcode present on the product. 
The POS user will scan the barcode and the barcode data will automatically be visible in the “scan the barcode” pop-up tab.
All the details of the product will be available on the POS machine. The POS agent can process a number of customers in comparably less time.
This increases the efficiency of the sales agent and no there is no manual labour. 
That’s all for the Role of the Barcode in Opencart Point of Sale. Learn more about Webkul Opnecart development services. If you still have any issues, feel free to add a ticket and let us know your views on our Webkul Support System.
