Abstract
The keyboard, in a physical or virtual form, is one of the most popular and available communication mediums for computers and mobile devices. In this paper, we introduce the Keydrop, a novel virtual keyboard layout for a touchscreen that dynamically changes the keys’ labels. The results collected from 54 participants showed that Keydrop outperforms the usual QWERTY virtual keyboard in terms of typing speed and the number of typos. The solution gained positive feedback from participants, and the empirical results showed that users type 6% faster, making 33% fewer typos. The proposed solution achieves a speed of 25.17 words per minute (WPM) and 1.20 keystrokes per character (KSPC).
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