Night writing visited the National Institute for the Blind in Paris, France, where he met Louis Braille. Braille identified the major failing of the code, which was that the human finger could not encompass the whole symbol without moving and so could not move rapidly from one symbol to another. His modification was to use a six-dot cell, the Braille system that revolutionized written communication for the visually impaired. Night writing Night writing, a.k.a. sonography, was a system of code that used symbols of twelve dots arranged as two columns of six dots embossed on a square of paperboard, and is now
Museum of the American Printing House for the Blind are meant to be touched. A reader rail follows the entire museum with braille labels, audio devices, and tactile illustrations in front of each exhibit. Visitors will see original Talking Book recording and playback equipment, long canes and dog guide harness, original stereotype printing plates and equipment, a comprehensive collection of historic braillewriters, and many historic books printed in various tactile writing systems. These include "An Essay on the Education of the Blind" printed 1786 in the first raised letters for blind people; "The Gospel According to St. Mark" printed 1834 in raised Roman letters; John Bunyan's "Pilgrim's Progress" printed