sentence: Night writing uses two columns of six dots.
sentences_before: Charles Barbier used a similar system, because Napoleon wanted a code that soldiers could use to exchange messages silently and without light at night. Barbier called it night writing.
sentences_after: Barbier's system was too hard for soldiers to learn, and the military did not use it. There it became very successful. Even though the system was difficult to learn, it did help the blind to read better than earlier systems. Barbier had understood that it was better to use a system that used dots over one that used lines.
concept_name: night writing
headings: Braille Before Braille
categories: Braille Tactile alphabets Assistive technology Encodings Blindness Latin alphabet representations Writing systems Encodings