When barcode labels are passed over some type of reader or scanner, information is provided to the buyer and storeowner. For the consumer, information such as original price, size, sales price, tax, and name would be available. For the storeowner, in-depth data provides valuable information for marketing, inventory, imaging, sales, and more. Every barcode must be scanned for this information to be presented. The way in which barcodes are scanned varies, depending on the business and usually, quantity of merchandise being moved.

Barcode scanners work in a number of ways. For instance, some companies use what is called a handheld or pen scanner. In this case, a small wand or pen-like instrument is moved slowly across the label. One of the most popular choices is the fix-mounted scanner. With this symbol scanner, merchandise is simply passed over so information is read. The process is extremely fast and accurate. Because of this, performance is greatly increased, which is why many grocery type stores use this option. Finally, automatic, imager scanners, the merchandise must be laid on top so the item is swept by the machine itself, rather than you sweeping the item.