This study aimed at investigating natural thumb zone of the user in smartphone touchscreen with one-handed grip. The subjects were divided into three groups according to their thumb lengths: small, medium, large. Experiments were carried out using three smartphones of different sizes: 4.7 in., 5.1 in., 5.2 in. The natural thumb zone of each group was analyzed using heat-map method. In large group, the thumb zone occupied more than 50% of the touch screen, while small and medium groups occupied only about 30% in all smartphones of different sizes. Compare to other groups, the thumb zone ratio of the small group in 5.2 in. smartphone was found greatly reduced. The lowermost region and the upper-left region of the smartphone touchscreen are not commonly included in natural thumb zone, regardless of the thumb-length groups. The results of this study could be used for designing new mobile device to enhance the usability of one-handed interaction; small devices with a touch screen as well.
|Title of host publication||Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume VII|
|Subtitle of host publication||Ergonomics in Design, Design for All, Activity Theories for Work Analysis and Design, Affective Design|
|Editors||Sebastiano Bagnara, Riccardo Tartaglia, Sara Albolino, Thomas Alexander, Yushi Fujita|
|Number of pages||7|
|Publication status||Published - 2019|
|Event||20th Congress of the International Ergonomics Association, IEA 2018 - Florence, Italy|
Duration: 2018 Aug 26 → 2018 Aug 30
|Name||Advances in Intelligent Systems and Computing|
|Other||20th Congress of the International Ergonomics Association, IEA 2018|
|Period||18/8/26 → 18/8/30|
Bibliographical notePublisher Copyright:
© Springer Nature Switzerland AG 2019.
All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Computer Science(all)