Has anyone ever used QR codes on the business cards or store doors? It seems like a waste of space, you need to have a special app on your phone to read it. I think most people don't use that.
As an iOS user, I always assumed QR code reading was just built into Android's camera app. Is that not so?
Google Now has QR code reading built in, if you have a QR code on the screen (e.g through a camera app) you can have google now scan the screen by holding the home button.
I don't remember having to enable it, but if it isn't enabled for android users you can go into Google Now settings and enable "Screen Search".