The four articles in this special issue of Human-Computer Interaction describe recent research in mobile text entry. The issue begins with a review article that provides general comments on methodologies for evaluating new text entry techniques. The next two articles present Dasher--a text entry technique with an interface driven from continuous two-dimensional gestures and a detailed extension to the prediction model of Soukoreff and MacKenzie. The final article takes a completely different approach to modeling the text entry task. As a collection, the articles represent a sample of promising research initiatives in text entry for mobile computing.
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