The writing system that uses raised dots and was developed by Louis Braille is Braille.
Braille is a tactile code in which combinations of raised dots represent letters, numbers, punctuation and other symbols. A standard Braille cell has six possible dot positions arranged in two columns of three, allowing 64 patterns when the blank cell is included. Readers identify the patterns by moving a fingertip across embossed paper or another tactile surface.
Louis Braille, a French educator who was blind, encountered Charles Barbier’s raised-dot night-writing system at the Royal Institute for Blind Youth in Paris in 1821. Braille simplified Barbier’s larger twelve-dot arrangement into compact six-dot cells that could be recognized with one touch. He published an early description of his method in 1829, and a revised form appeared in 1837.
Braille is not a language or a spoken alphabet; it is a writing system that can represent many languages. It also extends beyond ordinary text into music, mathematics and science. Moon type and embossed letters were earlier tactile approaches, while Morse code encodes messages for signaling rather than fingertip reading.