"A new mobile shopping experience is coming to major cities around China with a subway network, and is currently being tested in Shanghai and Beijing.
The idea is simple -- and it's basically a rip-off of what Tesco Homeplus has done in South Korea, where mobile penetration rates are among the highest in the world.
Subway stations have been converted into virtual supermarkets. All you'll need to do is to scan the QR codes of the products you want, and once you're done with your purchase, the goods are delivered to your doorstep when you get home. Shopping done!
So successful and game-changing is this technology that Tesco has become the top online supermarket in South Korea and a "very close second" offline."
Subway supermarket shopping comes to Shanghai - Shanghaiist
Virtual QR Code Supermarket in Korean Subway - Tesco - YouTube