You've seen them. Those little, square, black and white thing-a-ma-gigs. They're on billboards, on nametags at conferences, in magazines. They're QR codes. They're making a move through social media, marketing and advertising faster than I can update my status on Facebook.
Grocer Tesco unveiled their virtual supermarket in a subway in South Korea--where a large billboard was installed in the station which is designed to look like a series of supermarket shelves. Each sign also includes a QR code.
Users scan the code of the product they would like to purchase, and add it to their online shopping cart.
After the web transaction is completed, the products are delivered to the user's home within the day.
How awesome is that??! Check it out here: http://www.designboom.com/weblog/cat/16/view/15557/tesco-virtual-supermarket-in-a-subway-station.html
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