Hi. Just stumbled onto your post. There is a small, but growing group of educators who are determined to develop something like you are describing sooner rather than later. We are trying to get a significant player involved in this, but we are willing to do some pilots with something less than perfect so that we can develop the software side of this while perfecting the hardware side. We are anxious to see how the new Pixel Qi screens turn out later this summer. That will be very important to a dual-purpose reader and traditional computing device in one. It sounds like their screen will do it.
CHeck out a bit of what we are thinking at
www.padmoja.com. THanks.