Speech-input keying is a useful means of providing a hands-free call set-up for users with reliable voice, and may be valuable even where full hands-free operation is not necessary (eg when hand tremor interferes with manual keying). Useful for dyslexsic users who can read aloud and simultaneously dial a number thus avoiding short-term memory problems.

Such systems could be limited to just the numerals or a few words such as 'doctor' or 'Jane'.