Virtual supermarket in a South Korean subway

This is the greatest invention. Ever. Commuters in South Korea can now do their grocery shopping whilst waiting for the train to arrive using their mobile phone to scan the QR codes of the virtual goodies they want. The order is then delivered direct to their doorstep the next day. Amazing! Sure beats moaning about the crowds, delays, smells, noises …
Vrtual Supermarket in South Korea (2)
Vrtual Supermarket in South Korea (3)