The human ilustration was the first metod of communication ever invented allowing people to passing the information throught generations, it was the only way at the time to communicate with deaf people.
The sign language was invented by the French priest, Charles Michel de I'Eppe, in France with a purpouse of deaf people communicate. The sign language today is Essential to deaf people communicate.
Braille is a language with the purpouse of blind people to read or deaf and blind people, it was created by Louis Braille who was blinded at the age of three. Braille was invented in france in a school for blind people.
The subtitle was invented allowing people who have an audio deficience or people who do not understand the language of the movie or video by reading the subtitles.
The SMS was invented allowing people to communicate with their cellphones trhought messages, allowing people who have an audition problem to communicate normaly.
Emojis were created with a purpouse of giving emotions to a text mensage. The emojis were created by Shigetaka Kurita an engineer at a japanese phone company. Before emojis pieces of text symbolizing emotions, some examples are :-),XD,:-D.
The orkut was one of the first apps to be created for a social media reason but it did not have video or audios, allowing people with any audio deficience to communicate normally with no restrictions.
Subtitles on YouTube
YouTube added subtitles opening the platform for people with an audio deficience, also people who do not understand the language of the video can wacht it.
Deaf Match is a dating website for deaf people whitch helps these people to find a partner that will have no problem with the communication.
Google Live Transcribe
Google Live Transcribe is an android app to deaf people, so they can make what people say into a text and read it.