[S4M]

I'm wondering if there is a practical use of such a graphic language. I am thinking of printing the pictures associated with the code, put them somewhere, and other people could take some photos of those pictures with their smartphones and run the corresponding code. That might be useful for a game but I can't think of anything yet.

[ball_of_lint]

Like a qr code but without needing internet. Could be cool for geocaching

[dTal]

QR codes don't need internet. They just get less reliable the bigger you make them, so often people just put URLS in them and put the real info at the URL. There are plenty of "historical site" QR codes around here that have a short paragraph of info in them.