" I had the same idea a while back for a surface rubbed by a finger and ordered one of those tactile transducers" - Dewster
This is one of the slightly depressing things about papers like this - When I see the level of sophistication of what some people are doing, and the amount of serious R+D both at an academic and practical level - well, I feel a bit like a hobbyist!
When it comes to ideas about musical interfaces, I think the chance of hitting on something completely new is approaching infinite improbability!
The other somewhat depressing aspect is that, for all this R+D, not that many new interfaces actually appear on the market -- The ones that do, and become most popular (key operated algorythmic composers / sample playback type stuff) is stuff I have no interest in.. My interest is more around interfaces like the Continuum - and yes, a few of these have appeared in recent years - but not at a price which allows people to risk the expenditure to try it out..
Fred.