Many people know about Braille writing, that it is a writing system consisting of point combinations, and it can be read by touch by visually impaired people. It was developed by Louis Braille, based on 6 points just like the dice.
But it is probably not known that there are separate Braille alphabets for German, English etc.. You probably didn’t know either, that we can display not just letters, but numbers and symbols used in maths, physics, and chemistry, IT signs, sheet music etc.
It is also interesting, that we distinguish full writing, where each braille letter is displayed, and brief writing, where we write the text in abbreviated form.
It is clear, that such a smart system is modern and relevant even in the XXI. century. Braille writing is not only a paper based system but Braille is also available on computers, smart phones, etc.. Braille display is still available if the phone or laptop is not there, or if the battery is flat.
It is also important, that the tactile writing system is the only possibility for blind or visually impaired people to experience INDEPENDENT reading, which is in no way equal to a text read by a speech synthesizer or by another person.