We may be only a few years away from a touchscreen that can display actual braille characters. This could open up an entirely new world for the visually impaired. Man, we love technology!
http://www.slashgear.com/screen-that-can-dynamically-display-braille-might-be-coming-18423423/
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We may be only a few years away from a touchscreen that can display actual braille characters. http://bit.ly/1nhEXcz