When computers were text–based or at least did not include complex graphical environments,
they were ideal to be used by deaf-blind people with the use of refreshable braille displays.
Such approach was taken by Durre [6], as well as Sriskanthan and Subramanian [7] in 1990.
Before them, Bazzani and Mumolo presented a system actually meant not to control a computer, but to communicate with others through a telephone line [8].