A barcode system is a method of encoding information in a visual format that can be easily scanned and read by machines. It typically consists of a series of parallel lines and spaces of varying widths, which represent data such as product numbers or prices. This system is widely used in retail, inventory management, and logistics to track products and streamline operations. When a barcode is scanned using a barcode scanner, the encoded information is quickly retrieved and processed by a computer system. This technology helps businesses improve efficiency, reduce errors, and manage stock levels effectively, making it an essential tool in modern commerce.