This is video from a fast-paced chat with Joe Michels of Software Ops, creator of several iPhone apps. His lineup includes several applications for secure storage of information, such as My Eyes Only (iTunes link) and ID Lock (a "lite" version of My Eyes Only). There's also Aerochive on the Mac desktop, which allows wireless archiving and visualization of the information stored in the iPhone apps, which can include credit cards, passwords and notes, among other things. With your data fully encrypted and password protected, Joe's stated mission is to keep your info safe and away from prying eyes.
Joe also mentions an upcoming application, called My Eyes Only Photo, which brings My Eyes Only security to photo storage and browsing. There are screenshots of the soon-to-be-released application up on the Software Ops site. Check out the video to hear the developer's take on these apps.