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).