With the request of Napoleon, the system developed by Charles Barbier to allow troops to negotiate in the darkness without light. Although this system was rejected by the military, Charles Barbier met Louis Braille in 1821 when he visited the blind section of the Paris National Institute. Braille said that Barbier's greatest minus is that the representative letters of his alphabet can not be understood unless he moves his finger. This meeting was not able to pass quickly from one symbol to another. Braille produced the alphabet, which would then take his name as a result of his work as a revolutionary. @lndesta120282