Design and Evaluation of a Novel Trackball Input Device for Middle-Aged Users

  • Fong-Gong Wu
  • Jack Chuang
  • Chien-Hsu Chen
  • Li-Ru Lai
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6775)


This study developed two sets of novel trackball input devices operated by two hands with no space constraints, and required a series of experiments. Besides, the performances of the two newly-developed devices are significantly better than both existing trackball input devices in several tasks. However, the results of stability assessment tests show that the ability of a mouse to control the cursor is still greater than all the other devices. In physical observation part, wrist extension and ulnar deviation were measured while using Jack-1 and Jack-2, and showed apparently slighter than all the other devices.


Trackball input device Two-handed operation Middle-aged people 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Fong-Gong Wu
    • 1
  • Jack Chuang
    • 1
  • Chien-Hsu Chen
    • 1
  • Li-Ru Lai
    • 1
  1. 1.Department of Industrial DesignNational Cheng Kung UniversityTainanTaiwan

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