Dasher is a one finger user interface that allows text entry without a keyboard.

Keyboards are inefficient for two reasons: they do not exploit the redundancy in normal … all » language; and they waste the fine analogue capabilities of the user’s motor system (fingers and eyes, for example). I describe a system intended to rectify both these inefficiencies. Dasher is a text-entry system in which a language model plays an integral role, and it’s driven by continuous gestures. Users can achieve single-finger writing speeds of 35 words per minute and hands-free writing speeds of 25 words per minute. Dasher is free software, and it works in all languages, and on many platforms. Dasher is part of Debian, and there’s even a little java version for your web-browser.

Dasher Demonstration

Honestly, I pretty much disagree with this method being more efficient than keyboards. The reason you type fast is because your fingers are used to the words you are typing, that is to say you typed the word before. However I see a possibility how this new method could benefit physically impaired users.

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