Not So Fast ...
Some applications/plugins cease to work properly if you remove write permissions, hence the temporary filesystem method.
4 publicly visible posts • joined 10 Jul 2010
This has been around for years. In Linux, one straightforward solution is to create a small temporary filesystem for flash related storage, the contents of which won't survive a re-boot.
Some good solutions (including the above) are explained in this thread:
http://forums.fedoraforum.org/showthread.php?t=232855
> "How about installing it in an upgraded keyboard, where it could be a context-aware or user-definable hotkey for launching apps, controlling media, displaying system stats, flicking through slideshows of the kids, or the like..."
Not exactly a new idea. Someone (can't remember who) had something similar way back in the mid-80s, although I don't think it was touch-screen. I designed and built a prototype one of those (it even used a small LCD display) for exactly that purpose in the late-80s as a University project. Wrote my own operating system for it 'n' all. Of course it was buggy as hell and broke frequently, so it never went anywhere ....