What is braille?

Short Answer
Braille is a system developed by Louis Braille that allows for the blind and visually impaired to read. This system consists of raised dots that represent letters, numbers and other punctuation. Around the world, people who are blind read braille with their fingertips.

Detailed Answer
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, with many braille readers using both hands to read. Virtually all letters, numbers, punctuation marks and numerous other symbols can be written with braille. Fun fact: experienced braille readers can skim content just like sighted readers!