The QR should be a link to the app in whatever store. One click to the app's install page is quicker than every other app store interface out there.
If there is a QR everywhere where someone is going "hey, i tried this and it was pretty good for X and Y," there could be a lot more synergy between magazines and billboards and the internet than it is now where everybody thinks it's just some weird Korean thing. Even Microsoft detects this and creates their own home-grown remake in case having an American, IP-encumbered icon was the barrier to adoption, which it apparently wasn't. It's a bummer, man.
If there is a QR everywhere where someone is going "hey, i tried this and it was pretty good for X and Y," there could be a lot more synergy between magazines and billboards and the internet than it is now where everybody thinks it's just some weird Korean thing. Even Microsoft detects this and creates their own home-grown remake in case having an American, IP-encumbered icon was the barrier to adoption, which it apparently wasn't. It's a bummer, man.