decapoint

thumb|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 thumb|The decapoint alphabet, digits, and punctuationthumb|

Decapoint, or Raphigraphy, was a tactile form of the Latin script invented by Louis Braille as a writing system that could be used by both the blind and sighted. It was published in 1839, over a decade after the six-dot braille alphabet. Letters retained their form, and so were legible without training to the sighted, but the lines were composed of embossed dots like those used in braille. "Decapoint" refers to the writing system, while "raphigraphy" is the use of a raphigraph machine to produce writing.