Effect of Orientation on Unistroke Touch Gestures

Authors. Sven Mayer, Valentin Schwind, Huy Viet Le, Dominik Weber, Jonas Vogelsang, Johannes Wolf, Niels Henze

Venue. CHI (2019) Full Paper

Type. Full Paper

Materials. DOI ACM PDF supplemental

Abstract. As touchscreens are the most successful input method of current mobile devices, touch gestures became a widely used input technique. While gestures provide users with advantages to express themselves, they also introduce challenges regarding accuracy and memorability. In this paper, we investigate the effect of a gesture's orientation on how well the gesture can be performed. We conducted a study in which participants performed systematically rotated unistroke gestures. For straight lines as well as for compound lines, we found that users tend to align gestures with the primary axes. We show that the error can be described by a Clausen function with R² = .93. Based on our findings, we suggest design implications and highlight the potential for recognizing flick gestures, visualizing gestures and improving recognition of compound gestures.

@inproceedings{10.1145/3290605.3300928,
    title        = {Effect of Orientation on Unistroke Touch Gestures},
    author       = {Mayer, Sven and Schwind, Valentin and Le, Huy Viet and Weber, Dominik and Vogelsang, Jonas and Wolf, Johannes and Henze, Niels},
    year         = {2019},
    booktitle    = {Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems},
    publisher    = {ACM},
    series       = {CHI '19},
    pages        = {1–9},
    doi          = {10.1145/3290605.3300928},
    url          = {https://doi.org/10.1145/3290605.3300928},
    abstract     = {As touchscreens are the most successful input method of current mobile devices, touch gestures became a widely used input technique. While gestures provide users with advantages to express themselves, they also introduce challenges regarding accuracy and memorability. In this paper, we investigate the effect of a gesture's orientation on how well the gesture can be performed. We conducted a study in which participants performed systematically rotated unistroke gestures. For straight lines as well as for compound lines, we found that users tend to align gestures with the primary axes. We show that the error can be described by a Clausen function with R\ensuremath{^2} = .93. Based on our findings, we suggest design implications and highlight the potential for recognizing flick gestures, visualizing gestures and improving recognition of compound gestures.},
    numpages     = {9},
    keywords     = {touch unistroke gestures, mobile device, user study, gesture set, orientation, design guidelines, touch input}
}