| Summary: | A new element to the text-input program Dasher, which works by predicting the letter most likely to come next in a piece of text being typed on a computer, is controlled by eye. In a report in Nature in August 2002, Dasher's originators—David MacKay and David Ward of Cambridge University in England—point out that a camera mounted next to the computer screen measures light reflected from the eyes. It then works out which direction the typist's eyes are pointing and therefore which letter is being looked at, and it transmits the information to the computer. As a result of this development, people who only have control over their eye movements, such as quadriplegics, will be able to communicate quickly and easily using a computer.
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