[BRLTTY] Pneumatic braille based on balls in a tube

[Mario Lang]

<timothyhobbs at seznam.cz> writes:

> For the past 40 years, there has been new a miracle technology which will 
> bring us cheap multi-line braille displays announced every 6 months. Each 
> time a technology is announced, the inventor is interviewed in the news 
> paper (page A4, bellow the fold) and subsequently anointed as a saint 
> (figuratively of course). After the single news article, the inventor 
> disappears from the face of the earth. Did you read about the latest one? 
> Some Chinese design student "invented" a braille camera. Won some sort of 
> award for drawing a picture of a camera with dots on the back. Absolutely no
> mention about how those dots are going to move. News media went crazy about 
> "how it's wonderful how modern technology is opening up the world for the 
> blind". But you're still reading this on a clunky old (clunky new) piezo 
> display, aren't you? Has "modern technology" really progressed so much in 
> the past 40 years?

I know these stories, and I know about many failed attempts to replace
piezzo.  I hope your project is going to be different, but from
experience (which you list above), I am not very convinced :-)

BTW, another issue that many alternative systems have is latency.  As a
potential user, noise and latency are my biggest concerns.

-- 
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