I don't get it. If there is such a need for this, why wasn't it met with software on any of the sylus based tablets that came out over the last 15 years? Was their hardware to heavy and clunky? Because it seems to me that for serious work, especially making fine notes on a blue print, the accuracy of a stylus over a fingertip would be very valuable.
I'd say the reason it didn't happen earlier was wireless communications and batteries.
There just weren't any devices with enough wireless bandwidth to throw huge design prints around, and the batteries on small devices that use a lot of radio have only just got over the 8 hour mark needed to get through a work day.
