There are many iPhone applications that integrate the phone camera with software in novel ways. I came across this video demonstrating how it can be used to deposit checks electronically.
The interface demonstration starts at the 1 minute mark if you would like to skip the advertisement.*
*I’m not sure if it counts as an advertisement when most people aren’t allowed to bank there. You must have a connection to the military to use USAA (hence the aircraft carrier example in the video).
This story is just now all over the wires!
http://www.nytimes.com/2009/08/10/technology/10check.html?em