Only problem with this is it discourages shifting to paper-less business. Remember when that was a goal of business and government. It's been so successful via the fact that it's simply easier than shuffling papers about. That being said, it is clever, sort-of a 255byte or so flash-rom storage on a piece of paper.
I think that things like migrating away from a paper-less society is best done in small steps. Who knows, things like these might actually speed up the process!
I love the way in which LibreOffice can export a PDF with the original document still embedded. If a scannable code on a paper document could contain all the data needed to recreate it without any loss, you'd get effectively the same thing in a tangible form.
