google does it again. 

Global supermarket giant Tesco solved the problem of enticing hard-working, time-strapped Koreans into its stores by bringing the shopping experience to them, with virtual stores based in subways and metro stations.

Shoppers were encouraged to browse life-like images of supermarket shelves with their smartphones and scan the QR codes on products to add them to their shopping carts, all whilst waiting for the metro. Their purchases would then be delivered to them at home, with no need to carry heavy bags.

Read more about creative uses for QR codes in marketing here.