LetterWise: prefix-based disambiguation for mobile text input
Proceedings of the 14th annual ACM symposium on User interface software and technology
Fundamentals of Wearable Computers and Augumented Reality
Fundamentals of Wearable Computers and Augumented Reality
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Mobile HCI '02 Proceedings of the 4th International Symposium on Mobile Human-Computer Interaction
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CHI '03 Extended Abstracts on Human Factors in Computing Systems
TiltText: using tilt for text input to mobile phones
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Human-Computer Interaction
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IEEE Pervasive Computing
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Proceedings of the 7th international conference on Human computer interaction with mobile devices & services
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LetterEase: Improving text entry on a handheld device via letter reassignment
OZCHI '05 Proceedings of the 17th Australia conference on Computer-Human Interaction: Citizens Online: Considerations for Today and the Future
Integrating isometric joysticks into mobile phones for text entry
CHI '06 Extended Abstracts on Human Factors in Computing Systems
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Text Entry Systems: Mobility, Accessibility, Universality
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Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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International Journal of Human-Computer Studies
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Proceedings of the 2008 annual research conference of the South African Institute of Computer Scientists and Information Technologists on IT research in developing countries: riding the wave of technology
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Human-Computer Interaction
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Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Services
A model of two-thumb chording on a phone keypad
Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Services
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International Journal of Human-Computer Studies
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Proceedings of Graphics Interface 2010
Improving mobile multi-tap text entry for Arabic language
Computer Standards & Interfaces
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International Journal of Human-Computer Studies
Understanding performance of eyes-free, absolute position control on touchable mobile phones
Proceedings of the 15th international conference on Human-computer interaction with mobile devices and services
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Proceedings of the Third ACM workshop on Security and privacy in smartphones & mobile devices
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The numeric keypads on mobile phones generally consist of 12 keys (0-9, *, #). Ambiguity arises when the 36-character alpha-numeric English alphabet is mapped onto this smaller number of keys. In this paper, we first present a taxonomy of the various techniques for resolving this ambiguity, dividing them into techniques that use consecutive actions to first select a character grouping and then a character from within that grouping, and those that use concurrent actions to achieve the same end. We then present the design and implementation of a chording approach to text entry that uses concurrent key presses. We conducted a controlled experiment that compared this chording technique to one-handed and two-handed versions of the commonly used MultiTap technique. The results show that the concurrent chording technique significantly outperforms both versions of the consecutive action MultiTap technique.