I posted this on the PianoWorld site, too. It might lead in interesting directions, but there is going to be some very ugly noise out there. From Time magazine, with links:
http://techland.time.com/2013/08/07/wha...e-control/
What I would prefer is a thin sheet that could just be put on the top of the keyboard, functioning like a trackpad, for changing parameters in a conventional way. Overlays on each key would risk accidental gestures, yes?
If each key had three stripes along it, any stripe struck could identify the key, while rolling side-to-side (as in the TIME-demoed example), or sliding along (ditto) could perform aftertouch, either or both. Cheap.
Did you look at his kick-starter page at http://www.kickstarter.com/projects/ins...l-keyboard ? The link is a little hard to see in the Time article.
My first impression was that it would be of no help for an acoustic piano sound. But of course he is more interested in horns and basses and synths, and he is getting good pitch bends and tremolos.
Well, if I'm identifying the right area there (scanning fast, time pressure) 1200 GBP is NOT cheap aftertouch, while what I'd be getting would have far wider scope. All the same, thinking aftertouch, there's no inherent lock on pitch, the AT could instead modulate timbre, say. AT's a very worthwhile facility. Gotta come sometime.
ADDED: soon would be good. Plus cheap.