An investigation into round touchscreen wristwatch interaction

ABSTRACT

The wristwatch is a device that is quick to access, but is currently under-utilized as a platform for interaction. We investigate interaction on a circular touchscreen wristwatch, empirically determining the error rate for variously-sized buttons placed around the rim. We consider three types of inter-target movements, and derive a mathematical model for error rate given a movement type and angular and radial button widths.

REFERENCES

• 1: Daniel L. Ashbrook , James R. Clawson , Kent Lyons , Thad E. Starner , Nirmal Patel, Quickdraw: the impact of mobility and on-body placement on device access time, Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, April 05-10, 2008, Florence, Italy [doi>10.1145/1357054.1357092]
• 2: J. Callahan , D. Hopkins , M. Weiser , B. Shneiderman, An empirical comparison of pie vs. linear menus, Proceedings of the SIGCHI conference on Human factors in computing systems, p.95-100, May 15-19, 1988, Washington, D.C., United States [doi>10.1145/57167.57182]
• 3: Y. Cui, J. Chipchase, and F. Ichikawa. A cross culture study on phone carrying and physical personalization. In HCI International, 2007.
• 4: J. Froehlich, J. Wobbrock, and S. Kane. Barrier pointing: using physical edges to assist target acquisition on mobile device touch screens. In ASSETS, 2007.
• 5: Gabor Balazs Blasko , Steven Keith Feiner, Cursorless interaction techniques for wearable and mobile computing, Columbia University, New York, NY, 2007
• 6: R. Schmidt, H. Zelaznik, B. Hawkins, J. Frank, and J. Quinn. Motor-output variability: A theory for the accuracy of rapid motor acts. Psychological Review, 86(5), 1979.
• 7: Thad E. Starner , Cornelis M. Snoeck , Benjamin A. Wong , R. Martin McGuire, Use of mobile appointment scheduling devices, CHI '04 extended abstracts on Human factors in computing systems, April 24-29, 2004, Vienna, Austria [doi>10.1145/985921.986100]
• 8: Daniel Vogel , Patrick Baudisch, Shift: a technique for operating pen-based interfaces using touch, Proceedings of the SIGCHI conference on Human factors in computing systems, April 28-May 03, 2007, San Jose, California, USA [doi>10.1145/1240624.1240727]

INDEX TERMS

Primary Classification:
  H. Information Systems
  H.5 INFORMATION INTERFACES AND PRESENTATION (I.7)
      H.5.2 User Interfaces (D.2.2, H.1.2, I.3.6)

General Terms:
Human Factors