Braille is a tactile writing system used by people who are blind or visually impaired. It consists of raised dots arranged in specific patterns to represent letters, numbers, and punctuation. Each character is made up of a combination of six dots, organized in two vertical columns of three dots each. Developed by Louis Braille in the early 19th century, this system allows users to read by feeling the dots with their fingertips. Braille can be found on various materials, including books, signs, and labels, making information accessible to those who cannot read standard print.