Can someone build a Shazam-like, typeface-identification application for the iPhone?
Here's how it would work: 1) you point the camera at the text in question; 2) you take a picture; 3) and then you let the app identify the typeface for you while you wait. (Maybe there's an intermediate step between 2 and 3 where you verify that you've taken the correct photo and that you didn't make it come out all blurry.)
You're reading a beautiful old book and are wondering what type it's set in; you check the colophon and copyright pages--nothing doing. No problem, you take out your iPhone, open the type-identification app, snap a photo of the book, and wait a second. A second later, the app tells you the name of the type that the book was set in.
You and your friends are arguing about the typeface that Wes Anderson always uses--the one that looks a bit like Futura but isn't Futura. Is it Avenir? No one can agree. Someone takes out her/his iPhone and . . . you get the idea.