A UPC code, or Universal Product Code, is a unique series of numbers and bars used to identify products in stores. Each code is typically found on a product's packaging and consists of 12 digits. The first six digits represent the manufacturer, while the next five identify the specific product. The final digit is a check digit used to ensure the code is scanned correctly. UPC codes are essential for inventory management and sales tracking in retail environments. When scanned at the checkout, the code allows cashiers to quickly retrieve product information and prices, streamlining the purchasing process for both customers and businesses.