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
Decapoint was a tactile form of the Latin script invented by Louis Braille as a system that could be used by both the blind and sighted. It was published in 1839. Letters retained their linear form, and so were legible without training to the sighted, but the lines were composed of embossed with dots like those used in braille. Each letter occupied a 10×10 cell sufficient to resolve the graphic form of print.
Louis Braille, 1839. Nouveau procede pour representer des points la forme meme des letters, les cartes de geographie, les figures de geometrie, les caracteres de musiques, etc., a l'usage des aveugles (New Method for Representing by Dots the Form of the Letters Themselves, Maps, Geometric Figures, Musical Symbols, etc., for Use by the Blind)