A QR code (Quick Response Code) is a grid-type two-dimensional code which can contain much more information than a mere barcode.
You can access a lot of information by scanning a QR code with a smart phone or QR scanner.

You need to install a barcode scanner app in your smart phone to use a QR code.
After searching for apps with the keyword 'QR Code' in App Store (iPhone) or Google Play (Android), select and install an app. Execute the app and scan a QR code to see the embedded information.
(You can visit the website of Chung Pyung Hwa Fashion Mall by scanning the above QR Code).