Barcode scanning is a technology that uses a laser or camera to read the information encoded in a barcode. A barcode is a series of parallel lines and spaces that represent data, such as product information or prices. When a scanner reads a barcode, it converts the visual pattern into a digital format that can be processed by a computer or point-of-sale system. This process is commonly used in retail stores, warehouses, and libraries to quickly identify and track items. By scanning a barcode, businesses can efficiently manage inventory, streamline checkout processes, and reduce human error in data entry.