Canon has recently unveiled a free iPhone application to enable wireless photo printing from an iPhone or iPod Touch to a compatible Canon PIXMA printer — including the MP990, MP640 and MP560 — via a wireless network, which it [application] can automatically find. The application allows users to select multiple photos in a multitude of sizes and variety of paper types and print up to 20 copies at one time.
Finally, like that’s not fast enough, you can start the camera directly from Canon’s application and print captured photos instantly.
I’m not a big fan of printing out my photos but I know some people who dig the idea. For those folks, here’s the link to the AppStore, from where they could grab the app for free.