Retreiving photos from the photo gallery

Hi fellow ranchers,

I developing an app, that allows user to select certain number of pictures from the photo library. The selected photos are then tagged to certain data of the application. I want to know, if there is a way by which I can retreive the photos again later, corresponding to the data saved in the application.

There is an option of saving the data in the application sandbox itself, but as the number of photos to tag can be hogh, it doesn't seem to be a viable option.

So by question is: Is there a way to retreive photos from the photo gallery?

Thanks in advance

I doubt if the metadata you'd be saving for each photo would be very large. I'd think even if you filled the iPhone with photos the tag information would still be relatively tiny.

It's quite possible to select photos. There's a tutorial here: http://www.zimbio.com/iPhone/articles/1109/Picking+Images+iPhone+SDK+UIImagePickerController