What is a barcode scanner used for in retail business?

Correct answer: Product identification and billing

The governing concept is the use of technology in retail operations. A barcode scanner reads the coded pattern printed on a product and connects that code with information stored in the retailer’s system, such as the product name and price. This allows the item to be identified quickly and added accurately to the customer’s bill. Hence, option C is correct. The scanner may also help update inventory after a sale, but its immediate retail functions are product identification and billing. Option A belongs to human-resource management, option B concerns legal or administrative registration, and option D is not a normal purpose of a barcode scanner. The technology therefore improves speed, accuracy, and convenience at the point of sale.