For users who cannot use their arms- use speech recognition rather than keyboards/ mouse, use specialist input devices (eye movements/ brainwave controlled)
For user with bad/ poor eyesite- ability to magnify areas on the screen, ability to increase the font size of text
For those who are blind- use of a braille keyboard [and they can have braille printers to produce output which other blind people can read], voice recorgnition (greater use of sound rather than visual aid)
For those who are colour blind- use the correct colour schemes
For those who are deaf- use virtual messages rather than warning sounds
For people with poor hand-eye coordination- use of a large mouse or a trackerball
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