Re: Touchscreen interaction

I think that for the best example of touch screen interaction, Android probably 
is the best bet. All the API's that matter are open source, and although not all 
versions of the Talkback screen reader have their source code released, full 
source code is in fact available for new enough versions to get an idea of how 
the interactions work. That said, though Android does contain a Linux kernel, it 
is not at all a Linux distribution, so much of the fundamentals will be 
different, just like looking at any other OS for inspiration. I only mention 
Android here because the source code is mostly open and fairly well documented.
~Kyle