That's another thing that's going to be replaced by an app before we know it - the medical general practitioner. You'll be walking down the street feeling fine, when "PING!" goes your phone. It's diagnosed you with something and is ordering you to get treatment before symptoms appear. Up pops the QR code prescription and off to the pharmacy you go. If you don't go or don't take the (RFID fitted) tablets, you'll get a visit from public health to "protect the public" from the "disease risk" you've now officially become. It's no joke.