Effects of grip span in one-handed thumb interaction with a smartphone

Sung, Ki-Seok; Cho, Jay; Freivalds, Andris

doi:10.1177/1541931213601243

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…The device in this study was controlled to a 4" screen. However, with the large screen smartphones becoming increasingly popular for better experience in viewing content it is important to see how these (screen edge and screen corner) boundaries change with respect to the change in screen (along with change in grip) and hand sizes (Sung, Cho, & Freivalds, 2016). Therefore, testing with different device sizes and incorporating hand size in the stratification could have the potential to improve the study findings.…”

Section: Discussionmentioning

confidence: 99%

Identifying the boundaries of screen edge and screen corner gestures based on thumb and index finger interactions on a small touch screen

Cho

Sung

2017

Proceedings of the Human Factors and Ergonomics Society Annual

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Due to the increasing complexity and number of additional features now found in smartphones, it is important for smartphone designers to provide users an efficient way to access these features. This study examines the potential of performing gestures that start at the screen corners (rather than the middle of the edges), by drawing the trajectories and identifying the boundaries of screen edge and screen corner gestures based on the thumb and index finger interactions. Eleven participants were required to perform screen edge and screen corner gestures using their thumb with one hand or index finger while holding the device with their other hand. Kernel density estimations were plotted based on interaction method and gesture. Paired t-tests showed that screen corners will not interfere with the commonly used screen edge gestures and could be a viable region for a new set of gestures. A primary contribution of this study is to present a baseline for screen corner gesture design guidelines.

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Section: Discussionmentioning

confidence: 99%

Identifying the boundaries of screen edge and screen corner gestures based on thumb and index finger interactions on a small touch screen

Cho

Sung

2017

Proceedings of the Human Factors and Ergonomics Society Annual

Self Cite

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“…Lee et al [6] identified optimal reach zones for the back-side interaction on smartphones with different widths and lengths based on subjective discomfort and muscle activation data when various tasks were given. Sung et al [7] investigated the touch performance of one-handed thumb interactions with iPhone 5S, 6, and 6 Plus by measuring the tapping time, hit count, and thumb-tip and determined reachability issues for large smartphones. In addition, Chowdhury and Kanetkar [8] determined the preferred size of smartphones with hand anthropometry data and in terms of smartphone handiness.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Relationship between User’s Subjective Feeling and the Degree of Side Curvature in Smartphone

et al. 2020

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To develop a flexible display, smartphones with edge screens with curved displays on both sides of the main screen have been used widely. Considering that small differences in the form of smartphones, such as length, width, and thickness, could affect user experience, the effects of the curvature of the edge screen should be identified. This study aimed to investigate the effects of the curvature of edge screens on subjective feelings of smartphone users and to find out the optimal curvature. In the experiment, four nonfunctional samples with different radii of curvature (4R/6R/8R/10R) were used as samples, and participants evaluated the five subjective feelings: grip/control comfort, front/side visibility, and stability of the samples with four usage patterns. Our results revealed that 8R is the optimal curvature for the edge screen based on subjective feelings in smartphone usage. Moreover, the effect of the curvature of the edge screen on grip comfort and control comfort varied according to the usage patterns. The results of this study can be applied to design of the curvature of edge screens in smartphones and it is expected that it will contribute to improvement of users’ satisfaction.

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Analysis of Unconscious Interaction Design for Smartphone Drop-Down Menu

Liu

Guo

2022

Human-Computer Interaction. User Experience and Behavior

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Effects of grip span in one-handed thumb interaction with a smartphone

Cited by 9 publications

References 16 publications

Identifying the boundaries of screen edge and screen corner gestures based on thumb and index finger interactions on a small touch screen

Identifying the boundaries of screen edge and screen corner gestures based on thumb and index finger interactions on a small touch screen

Understanding the Relationship between User’s Subjective Feeling and the Degree of Side Curvature in Smartphone

Analysis of Unconscious Interaction Design for Smartphone Drop-Down Menu

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