Starting in the 1960s, audio description in entertainment for the visually impaired became implemented in a few shows like Star Trek through a supplemental audio cassette. In the 1970s, radio stations in Philadelphia described movies through audio broadcast. The first movie ever released in theaters with audio description and subtitles was The Jackal (1997), which also implemented closed captions.
The implementation of audio descriptions started as a way to aid blind and visually impaired people who are unable to consume entertainment and media in the same way as able-bodied people. This also therefore expanded the audience range of the specific media types, most commonly television shows and movies, that could include these audio descriptions.
