A barcode scanner is a device that reads and interprets the information encoded in a barcode. Barcodes are typically printed on products and consist of a series of parallel lines and spaces that represent data, such as product numbers or prices. The scanner uses a laser or camera to capture the barcode's pattern and convert it into a digital format that can be processed by a computer or point-of-sale system. Barcode scanners are widely used in various industries, including retail, logistics, and healthcare. They help streamline operations by quickly identifying products, managing inventory, and reducing human error during data entry. This technology enhances efficiency and accuracy in tracking items throughout the supply chain.