Using visual cues to help text entry on PDAs
Laurent Magnien, Jean-Léon Bouraoui, Frédéric Vella · 2003
Text input enhancement is well suited as soon as degraded conditions are encountered, whether due to handicap or use while moving. We propose a novel text input assistance, based on the AZERTY soft keyboard, whose keys are selected one by one thanks to a pointing device. The keys likely to be selected are predicted and contrasted in order to help users visually. We postulate that this kind of help facilitates and accelerates input for novice users under degraded conditions. We have computed the theoretical reduction in time, thanks to the Hick-Hyman law: the theoretical gain, for a novice, is 50%). We plan to further improve help robustness and to carry out empirical validations of the prototype.