Pointing with fingers, hands and arms for wearable computing

Authors:
Ian Oakley;John Sunwoo;Il-Yeon Cho
Affiliations:
University of Madeira, Funchal, Portugal;Electronic and Telecommunications Research Institute, Daejeon, South Korea;Electronic and Telecommunications Research Institute, Daejeon, South Korea
Venue:
CHI '08 Extended Abstracts on Human Factors in Computing Systems
Year:
2008

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Abstract

Pointing is a fundamental enabling operation for human-computer interaction across a broad spectrum of scenarios. The paper presents a study exploring how to develop a pointing system for truly wearable, rather than hand-held, computing. It describes a Fitts' law study of pointing based on motions in free-space captured using an inertial sensor pack. It compares performance when the pack is held in the hand, mounted on the back of the hand and finally on the wrist. The results show a significant, but numerically small, advantage in using the hands over using the upper arm only. This suggests that for wearable tasks where pointing is relatively infrequent a wrist based sensor pack may well be sufficient to enable effective and usable interaction.