Advertisement

Design and Implementation of a Chorded On-Screen Keyboard for People with Physical Impairments

  • Yun-Lung Lin
  • Ming-Chung Chen
  • Yao-Ming Yeh
  • Wen-Jeng Tzeng
  • Chih-Ching Yeh
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4061)

Abstract

The purposes of this study were to design an alternative on-screen keyboard for people with physical impairments and to evaluate the efficacy of the chorded input method. The approach of the on-screen keyboard is based on the human computer interface. It gives visual guide and instant feedback to show users where they can find the characters they need. The system has been designed with the principles of universal design. Three factors including the learning ability, efficiency of using and subjective satisfaction are considered as the usability evaluation. According to a preliminary study, the participant felt mastered the text input method quickly. An experimental evaluation on the typing performance of the subjects with muscular dystrophy will be measured under both scanning input mode and chorded input mode in the future.

Keywords

Physical Impairment Novice User Universal Design Input Method Text Entry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Cook, A.M., Hussey, S.M.: Assistive technology: Principles and practice, 2nd edn. Mosby, Baltimore (2002)Google Scholar
  2. 2.
    Ingmarsson, M., Dinka, D., Zhai, S.: TNT-A numeric keyboard based text input method. In: Proceeding of the International Conference on Human factors in Computing Systems 2004, pp. 639–646 (2004)Google Scholar
  3. 3.
    Lehikoinen, J., Salminen, I.: An empirical and theoretical evaluation of BinScroll: a rapid selection technique for alphanumeric lists. Personal and Ubiquitous Computing, 141–150 (2002)Google Scholar
  4. 4.
    Richardson, R.M., Telson, R.U., Koch, C.G., Chrysler, S.T.: Evaluations of conventional, serial, and chord keyboard options for mail encoding. In: Proceedings of the 31st Annual meeting of the Human Factors Society, pp. 911–915. Human Factors Society, Santa Monica (1987)Google Scholar
  5. 5.
    Zato, J.G., Wangner, T., Barrasa, J., Rodriguez, E.: Alternative web access toolkit for impaired users. International Journal of Rehabilitation Research 28(1), 63–67 (2005)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Yun-Lung Lin
    • 1
  • Ming-Chung Chen
    • 2
  • Yao-Ming Yeh
    • 1
  • Wen-Jeng Tzeng
    • 1
  • Chih-Ching Yeh
    • 1
  1. 1.Department of Information and Computer EducationNational Taiwan Normal UniversityTaipeiTaiwan
  2. 2.Department of Special EducationNational Chiayi UniversityChiayiTaiwan

Personalised recommendations