We desperately need more stuff like this - creative solutions to real-[admittedly first]-world problems. I work in the financial sector and frequently despair of the overblown, overcomplicated and ridiculously expensive solutions that "The Business" come up with for trivial problems.
Somewhere along the lines, we seem to have convinced ourselves as a society that the right solution for any problem has to involve big shiny technology. As a consequence, solving problems creatively seems to be becoming a lost art. Kudos for the people who came up with this :).