Dots and Letters: Accessible Braille-Based Text Input for Visually Impaired People on Mobile Touchscreen Devices

  • Elke Mattheiss
  • Georg Regal
  • Johann Schrammel
  • Markus Garschall
  • Manfred Tscheligi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8547)


Tailored text input methods for visually impaired and blind users are needed on touchscreen devices to support their accessibility. Therefore, we de-veloped a new Braille-based text input method named EdgeBraille, which allows entering Braille characters by swiping one finger along the edges of the touchscreen. The approach was compared with the current standard method of a talking keyboard, first in a short-term lab study (14 participants) and then during two weeks of daily training (7 participants). Overall EdgeBraille was perceived well by the users. In terms of user performance we found no significant differences between the two methods. Based on the evaluation results and the feedback of our participants, we discuss advantages and disadvantages of Braille-based methods in general and EdgeBraille in particular, as well as possibilities for improvements.


Text Input Method Touchscreen Mobile Devices Braille Visually Impaired and Blind Users 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Elke Mattheiss
    • 1
  • Georg Regal
    • 1
  • Johann Schrammel
    • 1
  • Markus Garschall
    • 1
    • 3
  • Manfred Tscheligi
    • 2
    • 3
  1. 1.CURE – Center for Usability Research & EngineeringViennaAustria
  2. 2.ICT&SUniversity of SalzburgSalzburgAustria
  3. 3.AIT Austrian Institute of Technology GmbHViennaAustria

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