UltraViolet is a common fileformat and digital rights authentication system designed to allow a digital copy of a film or television show bought from any vendor physical or electronic to be played on any one of 12 devices owned by up to six members of a household, either via download or streaming from the cloud.
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.
The Lytro is an exciting and novel leap in digital photography, but because it still has some missing features, like flash and a fileformat that works in other software, buyers should consider it a second camera, at least for now.
One main reason: The company had a history of religious devotion to proprietary file formats, and took years to release a digital audio player that could handle the ever-popular MP3 format.