As part of a campaign by advertising agency Cheil, train commuters in Seoul can now grocery shop while they wait for their train to arrive at the platform. A large billboard was installed along the platform, recreating a Tesco Homeplus supermarket with each item marked with a QR code. By scanning the codes onto their smartphones, commuters are able to add the item into their shopping cart online and after purchase, will be delivered to their homes. Genius!
