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A tactile alphabet is a system for writing material that the blind can read by touch. While currently the Braille system is the most popular and some materials have been prepared in Moon type, historically, many other tactile alphabets have existed: Systems based on embossed Roman letters: Moon type; Valentin Haüy's system (in italic style)
where the word premier, French for "first", can be read. Braille was based on a tactile code, now known as night writing, developed by Charles Barbier. (The name "night writing" was later given to it when it was considered as a means for soldiers to communicate silently at night and without a light source, but Barbier's writings do not use this term and suggest that it was originally designed ...
The Gardner–Salinas braille codes are a proposed method of encoding mathematical and scientific notation linearly using braille cells for tactile reading by the visually impaired. The most common form of Gardner–Salinas braille is the 8-cell variety, commonly called GS8 .
New York Point (New York Point: ) is a braille-like system of tactile writing for the blind invented by William Bell Wait (1839–1916), a teacher in the New York Institute for the Education of the Blind. The system used one to four pairs of points set side by side, each containing one or two dots.
The coding is in accordance with ISO/TR 11548-1 Communication aids for blind persons. [3] Unicode uses the standard dot-numbering 1 to 8. Historically only the 6-dot cell was used in braille. The lower two dots were added later, which explains the irregular numbering 1-2-3-7 in the left column and 4-5-6-8 in the right column. Where dots 7 and 8 ...
Lucas Type, a British tactile alphabet system introduced by Thomas Lucas in 1838 and used to teach blind people, especially children, to read Around 1830–1832, Lucas developed his so-called Lucas system (or Lucas type), a form of embossed text or tactile alphabet system using a sort of "stenographic shorthand" with arbitrarily chosen symbols ...
A sample of decapoint. The relative efficiency of braille can be seen, as the line at the bottom is the braille transcription for the first two lines of decapoint: je vous prie de commander une planche pour la grille ci-jointe The decapoint alphabet, digits, and punctuation
Braille literacy has been a priority for Hadley since its founding in 1920, and to this day, braille courses are still the most popular. During the 2010 fiscal year, Hadley enrolled nearly 3,400 students in braille reading and writing courses alone (combined sighted and blind students).