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
National Federation of the Blind v. Target Corp. the Web Content Accessibility Guidelines or the Architectural and Transportation Barriers Compliance Board's Section 508 Amendment to the Rehabilitation Act of 1973 standards, specifically encouraging Target to adopt the alt attribute for clickable images featured on the website. In its petition, NFB alleged that in one instance, when a blind user visiting this website selected an image of a Dyson vacuum cleaner using his or her tab key, the voice synthesizer on the computer would say "Link GP browse dot html reference zero six zero six one eight nine six three eight one eight zero seven two nine seven three