A barcode scanner is a device that can read and interpret barcodes. Barcodes are machine-readable representations of data commonly used to track inventory or products. Barcode scanners use optical character recognition (OCR) to read barcodes and convert them into digital data. This data can then be used for a variety of purposes, such as tracking inventory levels or checking prices. Barcode scanners are commonly used in retail, but they can also be used in other industries, such as healthcare and manufacturing. There are different types of barcode scanners on the market, so it is important that you choose the right one for your needs.