Future conceptual computer

We have already seen many conceptual computers. Some of them were nearer to reality, others not very much. The conceptual computers don’t look like they will become a reality in the nearest future. Therefore, theay appear more appealing. The main idea of such conceptual computer comes from the concept: if you want to remember something – write it down on the napkin. So Napkin PC was created.
In theory such computer will work in the following way: using short range radio frequency pens will send data to the multi-touch e-paper “napkin” interface. Beside that pens and napkins also communicate with the base station PC via long-range radio frequency. As a result you’re able to share ideas with greater ease. Another advantage is that napkins are modular, so large-scale layouts can be formed by connecting them together.
If you’re still not sure in its efficiency, the Napkin PC requires so little power that there is no need for any battery.
It sounds like a really good idea, but will cost you a fortune to produce one device that probably wouldn’t work.