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Pickup usability dominates: a brief history of mobile text entry research and adoption

Dunlop, M.D. and Masters, M. Montgomery (2009) Pickup usability dominates: a brief history of mobile text entry research and adoption. International Journal of Mobile Human Computer Interaction, 1 (1). pp. 42-59. ISSN 1942-390X

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Abstract

Text entry on mobile devices (e.g. phones and PDAs) has been a research challenge since devices shrank below laptop size: mobile devices are simply too small to have a traditional full-size keyboard. There has been a profusion of research into text entry techniques for smaller keyboards and touch screens: some of which have become mainstream, while others have not lived up to early expectations. As the mobile phone industry moves to mainstream touch screen interaction we will review the range of input techniques for mobiles, together with evaluations that have taken place to assess their validity: from theoretical modelling through to formal usability experiments. We also report initial results on iPhone text entry speed.