PressureText: Pressure Input for Mobile Phone Text Entry

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Abstract

Pressure sensitive buttons are appealing for reducing repetitive tasks such as text entry on mobile phone keypads, where multiple key presses are currently necessary to record an action. We present PressureText, a text-entry technique for a pressure augmented mobile phone. In a study comparing PressureText to MultiTap, we found that despite limited visual feedback for pressure input, users overall performed equally well with PressureText as with MultiTap. Expertise was a determining factor for improved performance with PressureText. Expert users showed a 33.6% performance gain over novices. Additionally, expert users were 5% faster on average with PressureText than MultiTap, suggesting that pressure input is a valuable augmentation to mobile phone keypads.

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Publisher Link

http://dx.doi.org/10.1145/1520340.1520693

Citation

David C. McCallum, Edward Mak, Pourang Irani and Sriram Subramanian. 2009. PressureText: Pressure Input for Mobile Phone Text Entry. In Proceedings of the 27th International Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA '09), 4519-4524.

Bibtext Entry

@INPROCEEDINGS { mccallum09,
    AUTHOR = { David C. McCallum and Edward Mak and Pourang Irani and Sriram Subramanian },
    TITLE = { {PressureText:} Pressure Input for Mobile Phone Text Entry },
    BOOKTITLE = { Proceedings of the 27th International Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA '09) },
    YEAR = { 2009 },
    PAGES = { 4519--4524 },
    DOI = { 10.1145/1520340.1520693 },
}