I'll admit, I know nothing of the conferences of which you speak, and
often times, when I do bother researching the latest developments in
blind tech, I mostly come across things that would be cool to have,
but which are way out of my budget... and honestly, my Braille reading
speed is so slow that I doubt even a sub $50 display with a decent
cell count would catch my attention.
That said, I think the last time I was this excited over something in
the realm of tactile displays was when an article about the Tesla
Touch made it into Choice Magazine listening several years ago...
though sadly, nothing ever came of that as far as I know. In case you
haven't heard of it before, it was an experimental touchscreen that
used electrostatic vibration to simulate changes in texture.
Another case of Google being more or less useless because of something
else with the same name, but here's a Wikipedia article on the
underlying phenomenon:
https://en.wikipedia.org/wiki/Electrovibration
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