Optimizing the android virtual keyboard: A study of user experience

Virtual keyboards for mobile devices continue to lack the accuracy and efficiency of their mechanical counterparts. The intent of this study is to analyze the effectiveness of various virtual keyboard implementations employing key-resizing strategies on an Android mobile phone. Study participants were asked to type various phrases using three different virtual keyboard implementations in both portrait and landscape orientations. Quantitative results were reported and conclusions were derived to aid in the development and implementation of more efficient virtual keyboard interfaces for mobile devices.