Abstract
We introduce a novel typing technique for special symbols in the keyboard-only environment. The technique, called GPK (Gliding on Physical Keyboard), consists of two steps for entering special symbols. First, a user draws the special symbol on the keyboard by gliding over keys; Second, the user can select the desired symbol from the predicted symbols generated by GPK. Users can also switch from this mode to normal typing mode. We also present an application of this input technique based on web browsers. A user study with nine participants who are familiar with keyboard input showed the input efficiency of GPK. We compared the typing efficiency of GPK with other special symbol typing methods. We could deploy this method to office environments where users have desktop computers with a keyboard only. It could also inspire future work of integrating this method into word processors, document preparation systems and web environments.
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