A Universal Product Code, or UPC, is a unique series of numbers and bars that identifies a specific product. It is commonly found on product packaging and is used in retail settings to streamline the checkout process. The code consists of 12 digits, with the first six representing the manufacturer and the next five identifying the specific product. The last digit is a check digit used to ensure the code is scanned correctly. UPCs are essential for inventory management and sales tracking. Retailers and manufacturers use these codes to monitor stock levels, manage pricing, and analyze sales data. By standardizing product identification, UPCs help improve efficiency in the supply chain and enhance the shopping experience for consumers.