A UPC code, or Universal Product Code, is a barcode that is commonly used in retail and grocery stores for inventory and checkout purposes. Each unique barcode contains information about a specific product, such as its manufacturer and product number, allowing for quick and accurate scanning at the point of sale.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Bars for checking people out. Explanations are generated by AI and may be inaccurate.