The RocHCI group are working on some exciting projects. I heard of them when I googled “blind photography” iPhone [exactly like that]. Up came an article, Supporting Blind Photography which talked about an app for the iPhone called EasySnap.
What EasySnap did is give aural feedback to a blind person as they positioned the iPhone’s camera [I really want to try it!]. It appears to have been shelved as I couldn’t find any other references to a download or some such thing. But it sounds cool!
They are however working on other exciting things like VizWiz. [See ] With this thing you take a picture with the phone, record a question and send it off to something [a social network] or somebody for an answer.