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One-key Keyboard: A Very Small QWERTY Keyboard Supporting Text Entry for Wearable Computing
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BibTeX
@MISC{Kim_one-keykeyboard:,
author = {Seoktae Kim and Minjung Sohn and Jinhee Pak and Woohun Lee},
title = {One-key Keyboard: A Very Small QWERTY Keyboard Supporting Text Entry for Wearable Computing},
year = {}
}
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Abstract
Most of the commercialized wearable text input devices are wrist-worn keyboards that have adopted the minimization method of reducing keys. Generally, a drastic key reduction in order to achieve sufficient wearability increases KSPC (Keystrokes per Character), decreases text entry performance, and requires additional effort to learn a new typing method. We are faced with wearability-usability tradeoff problems in designing a good wearable keyboard. To address this problem, we adopted a new keyboard minimization method of reducing key pitch and have developed the One-key Keyboard. The traditional desktop keyboard has one key per character, but One-key Keyboard has only one key (70mmX35mm) on which a 10*5 QWERTY key array is printed. One-key Keyboard detects the position of the fingertip at the time of the keying event and figures out the character entered. We conducted a text entry performance test comprised of 5 sessions. The participants typed 18.9WPM with a 6.7 % error rate over all sessions and achieved up to 24.5WPM. From the experiment’s results, the One-key Keyboard was evaluated as a potential text input device for wearable computing, balancing wearability, social acceptance, input speed, and learnability.
Keyphrases
one-key keyboard additional effort new typing method wrist-worn keyboard text entry performance experiment result traditional desktop keyboard key pitch text entry performance test keying event wearable computing wearable text input device good wearable keyboard minimization method social acceptance new keyboard minimization method qwerty key array potential text input device sufficient wearability increase kspc wearability-usability tradeoff problem drastic key reduction input speed error rate
