Or at least that's how the app is supposed to work. It doesn't seem to want to recognize my face. Now, I know I have an fat ugly mug but it's not that bad.
Did I mention the app is in beta? I'm sure the face tracking issue will be fixed before he final release.
Right now the app only supports PDF, CBZ, and some image formats. It was originally developed for the japanese market, which explains the format support as well as the support for Japanese in the language options.
But in spite of the problems I had I am still hoping that they'll get it working. Hands-free reading has any number of real world applications from going through documents while typing on a keyboard to any activity which involves keeping your hands busy. I imagine a face tracking app built around the Kama Sutra would be particularly successful in the marketplace, though I'm not sure Apple would allow it..