Human-Computer Interaction

INTERACT 2015: Human-Computer Interaction – INTERACT 2015 pp 173-191

Where to Start? Exploring the Efficiency of Translation Movements on Multitouch Devices

Conference paper

DOI: 10.1007/978-3-319-22723-8_15

Part of the Lecture Notes in Computer Science book series (LNCS, volume 9299)
Cite this paper as:
Nguyen Q., Kipp M. (2015) Where to Start? Exploring the Efficiency of Translation Movements on Multitouch Devices. In: Abascal J., Barbosa S., Fetter M., Gross T., Palanque P., Winckler M. (eds) Human-Computer Interaction – INTERACT 2015. INTERACT 2015. Lecture Notes in Computer Science, vol 9299. Springer, Cham

Abstract

Predicting the efficiency of interaction techniques can be crucial for designing user interfaces. While models like Fitts’ law make general predictions, there is little research on how efficiency varies under different conditions like in which screen region a movement starts and in which direction it is going, and whether the surface is horizontal or vertical. This study investigates these aspects with regard to translation movements on a touch screen, using an extended Fitts’ law setup and considering arm kinematics. The results show that on horizontal displays translation is faster and causes less arm fatigue than on vertical ones. Also, on horizontal displays, we identified screen regions and movement directions that allow significantly faster movement compared to others. Finally, movements that employ shorter kinematic chains (e.g. just the wrist) are significantly faster than those that use longer ones (e.g. wrist, elbow, shoulder). We suggest adjustments to Fitts’ original formulation. In the future, our findings can inform or partially automate positioning decisions in interaction design.

Keywords

Multitouch interaction techniques Fitts’ law 2D translation 

Copyright information

© IFIP International Federation for Information Processing 2015

Authors and Affiliations

  1. 1.DFKISaarbrückenGermany
  2. 2.Augsburg University of Applied SciencesAugsburgGermany

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