Braille is a tactile representation of alphabetic and numerical symbols using six dots to represent each letter and number, and even musical, mathematical, and scientific symbols.
Braille (named after its inventor in 19th century France, Louis Braille) is used by blind and partially sighted people to read the same books and periodicals as those printed in a visual font.
Before the existence of the Braille system, the Haüy system was being used by blind and partially visually impaired people for reading purposes.
The date for the event was chosen by the United Nations General Assembly via a proclamation in November 2018.