Many physically impaired people can meet difficulties when using a computer and particularly with the keyboard. Often, a virtual keyboard can improve the usability of the computer system by handicapped people and can be adapted to their disabilities. From a combinatorial point of view, artificial ants have been studied to improve classical keyboard arrangements. This paper present how this method can fit the first problem and then become a tool to build new "tailor-made" keyboards. Then, the artificial ants meta-heuristic can be used as often as needed as an optimizer that take into account user's activities of writing.
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