Every time I try to write something in this space - it feels as if I'm describing a box. I'd rather not put stuff in a box, when I do that at home it disappears for all of eternity. So to be clear, this isn't a box. Not even close. It's not even a receptacle, nothing like it. I had spectacles once...never mind..
Web based font recognition tool "what the font" has been around for awhile. But it's now available for the iPhone. Currently free at the appstore.
http://new.myfonts.com/WhatTheFont/iPhone/
