What is braille?

What Is Braille In Short:

Braille was developed in 1824 by Louis Braille and it is a system of raised dots that can be read with the fingers by people who are blind or who have low vision.

What is Braille In Detail:

Braille is the system of raised dots used for reading by people who are blind or visually impaired.  Braille is not a language, but instead is a code by which many languages are written and read. Braille is read with the fingertips and virtually all letters, numbers, punctuation marks and other symbols can be written with braille.