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Escape-Keyboard: A Sight-Free One-Handed Text Entry Method for Mobile Touch-screen Devices

Nikola Banovic, Koji Yatani, Khai N. Truong

Source Title: International Journal of Mobile Human Computer Interaction (IJMHCI)5(3)

ISSN: 1942-390X|EISSN: 1942-3918|EISBN13: 9781466634503|DOI: 10.4018/jmhci.2013070103

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MLA

Banovic, Nikola, et al. "Escape-Keyboard: A Sight-Free One-Handed Text Entry Method for Mobile Touch-screen Devices." IJMHCI vol.5, no.3 2013: pp.42-61. http://doi.org/10.4018/jmhci.2013070103

APA

Banovic, N., Yatani, K., & Truong, K. N. (2013). Escape-Keyboard: A Sight-Free One-Handed Text Entry Method for Mobile Touch-screen Devices. International Journal of Mobile Human Computer Interaction (IJMHCI), 5(3), 42-61. http://doi.org/10.4018/jmhci.2013070103

Chicago

Banovic, Nikola, Koji Yatani, and Khai N. Truong. "Escape-Keyboard: A Sight-Free One-Handed Text Entry Method for Mobile Touch-screen Devices," International Journal of Mobile Human Computer Interaction (IJMHCI) 5, no.3: 42-61. http://doi.org/10.4018/jmhci.2013070103

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Abstract

Mobile text entry methods traditionally have been designed with the assumption that users can devote full visual and mental attention on the device, though this is not always possible. The authors present their iterative design and evaluation of Escape-Keyboard, a sight-free text entry method for mobile touch-screen devices. Escape-Keyboard allows the user to type letters with one hand by pressing the thumb on different areas of the screen and performing a flick gesture. The authors then examine the performance of Escape-Keyboard in a study that included 16 sessions in which participants typed in sighted and sight-free conditions. Qualitative results from this study highlight the importance of reducing the mental load with using Escape-Keyboard to improve user performance over time. The authors thus also explore features to mitigate this learnability issue. Finally, the authors investigate the upper bound on the sight-free performance with Escape-Keyboard by performing theoretical analysis of the expert peak performance.

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Escape-Keyboard: A Sight-Free One-Handed Text Entry Method for Mobile Touch-screen Devices

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