![A QR code is etched into the plinth at the base of the bronze sculpture of Betty Campbell during the unveiling of the statue in Central Square, Cardiff, of Betty Campbell, Wales' A QR code is etched into the plinth at the base of the bronze sculpture of Betty Campbell during the unveiling of the statue in Central Square, Cardiff, of Betty Campbell, Wales'](https://c8.alamy.com/comp/2GPFG85/a-qr-code-is-etched-into-the-plinth-at-the-base-of-the-bronze-sculpture-of-betty-campbell-during-the-unveiling-of-the-statue-in-central-square-cardiff-of-betty-campbell-wales-first-black-headteacher-picture-date-wednesday-september-29-2021-2GPFG85.jpg)
A QR code is etched into the plinth at the base of the bronze sculpture of Betty Campbell during the unveiling of the statue in Central Square, Cardiff, of Betty Campbell, Wales'
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In Seoul, retailer uses 3D QR codes and the sun to deliver discounts only during its quiet times - Springwise
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