A QR code is a barcode that contains information about the item to which it is attached. The information is usually represented by a series of numbers and letters. When you have a code, you can use it to find out more information about the item you are interested in, or to get a discount on the product you want to buy.

You can use a code to find out information about the item, such as the price, the style, or the product specification. You can also use it to get a discount on the product you want to buy.

QR codes are widely used in retail settings, where they are used to track the products that are sold in a store. They are also used in online retail settings, where they are used to display the price of an item online.