Braille was a revolutionary method of communicating with people who were blind when it was first invented, and it still remains an important tool to this day. No amount of technology will ever replace simple Braille tactile signs, especially when out and about in public with so many loud noises and busy retail attendants. Obviously, the majority of your customers are not likely to be catered to with Braille, but for those that are, it is an especially comforting feeling that makes them feel much more welcomed.