While both the Mobile Digital Scribe and ZPen would be more palatable if they captured natively into a more standard fileformat such as JPEG or PDF, both do a solid job of recording pages of notes and line drawings.
So if you pop in a DVD "infected" with Protect DVD-Video, it can't be read by Windows Media Player, Media Center Edition, or any DirectShow-based software, thanks to a Universal Disc Format that tricks your machine into believing that the IFO file is zero bytes long.
With 3D Photo, the two images with a disparity between the left and right eyes are merged into a single image and recorded as a Multi Picture Formatfile.