Apparently in Korea there's a train station billboard that you can shop using your smartphone! From what the article states is that you use the QR Code reader (for those of you that don't know what that is you can learn here) to shop at this grocery store online and within the day it will be shipped to the customer's home. Is this the new wave? Will we all just be shopping while out on our daily commute? I personally think it's pretty nifty and for those of us that have to be constantly on the go this could be really useful!