A QR code is a two-dimensional barcode that can encode information such as a web address or product-related data.
How it works in retail
Retail uses include linking to product information, care instructions, promotions or payments. A code used for checkout must meet the requirements of the relevant identification and scanning system.
A retail example
A care-label QR code opens a product page with washing instructions and repair information.
What to keep in mind
Not every QR code is suitable for retail checkout. The destination, encoded data and reader compatibility determine what it can do.
Sources & further reading
Examples are illustrative. Terminology and measurement conventions can vary by business and market.