Who’s behind it
Ciro Simone Irmici builds websites and games. He made Dots & Signs with the help of artificial intelligence, and he checks every table and every hand himself against the official documents of the organisations for blind and deaf people in each language. He is not a Braille or sign language teacher: to really learn, you need an instructor and deaf teachers.
Found a mistake in a letter or have an idea? Write to him: he replies himself.