Hi, I'm experiencing Mobile Tagging.
You can see it at the left side of this page.
Tags are generated dynamically, I'm using of course Erlang, Mochiweb, Ghostscript (rendering backend) and iec16022 to build the semacode.
Since I own a Nokia N95, I can efficiently scan my own codes, but I don't know if it's the case for everyone :)
So leave me a comment if you find those code hard to read...