MobiCentraList: Software Keyboard with Predictive List for Mobile Device

  • Georges BadrEmail author
  • Antoine Ghorra
  • Kabalan Chaccour
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9732)


Software keyboards were designed to provide accessibility to mobile users as well as to people with motor disability. Text entry is henceforth made possible on portable devices such as mobile phones, tablets, pads. Despite their obvious utility, these keyboards present major drawbacks in terms of speed of acquisition and induced fatigue comparatively to conventional physical keyboards. Optimization efforts have showed efficacy by adding prediction lists and dictionaries. Other researches have considered the effect of the position of characters and the prediction list relatively to the time of acquisition and performance. Those researches were designed for computer software keyboards. In this paper, the position of the prediction list is investigated on a mobile device. The “MobiCentraList” is the mobile version of a previous computer software keyboard “Centralist” which was developed for this purpose. The position effect of the prediction list is studied and compared to natural software keyboards.


Software keyboard Prediction list Text entry speed Dictionary Mobile device 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Georges Badr
    • 1
    Email author
  • Antoine Ghorra
    • 2
  • Kabalan Chaccour
    • 1
  1. 1.TICKET LABUniversité AntonineHadat-BaabdaLebanon
  2. 2.Université AntonineHadat-BaabdaLebanon

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