In developing countries Braille is almost always
written with a slate and stylus. Using these tools, Braille is written
in reverse, from right to left, so that the page can be read from left
to right when it is flipped over. For blind children, learning to write
Braille in this manner can be a formidable process. First, children must
learn mirror images of all letters, which essentially doubles the alphabet.
Second, feedback is delayed until the paper is removed and then
flipped over and read, so it may take significantly longer to identify
mistakes and correct them. The electronic slate and stylus will retain
the same use characteristics of a standard slate and stylus, but provide
instant audio feedback and allow the user to write both forwards and backwards.
Furthermore, when connected to a computer, the electronic slate will
serve as the user input device for an advanced Braille tutor, which will give
students Braille writing lessons.
Website:
http://www.cs.cmu.edu/~nidhi/brailletutor.html