Although only 10 to 15% of individuals who are blind can access braille, it is the most widely used tactile substitution tool for persons with vision impairment. Very few people with vision impairment learn to use it because other alternatives such as talking books are more desirable for people who become blind later in life.
Braille is a script which can take the form of any language and any language can be translated to its very own Braille equivalent. It is basically a combination of embossed dots which takes the form of different alphabets when the rows and columns of dots are changed.
From being manually punched by hand, Braille has come a very long way to now being typed to refreshable modes.