Authors
Pär-Anders Albinsson, Shumin Zhai
Publication date
2003/4/5
Book
Proceedings of the SIGCHI conference on Human factors in computing systems
Pages
105-112
Description
Bare hand pointing on touch screens both benefits and suffers from the nature of direct input. This work explores techniques to overcome its limitations. Our goal is to design interaction tools allowing pixel level pointing in a fast and efficient manner. Based on several cycles of iterative design and testing, we propose two techniques: Cross-Keys that uses discrete taps on virtual keys integrated with a crosshair cursor, and an analog Precision-Handle that uses a leverage (gain) effect to amplify movement precision from the user's finger tip to the end cursor. We conducted a formal experiment with these two techniques, in addition to the previously known Zoom-Pointing and Take-Off as baseline anchors. Both subjective and performance measurements indicate that Precision-Handle and Cross-Keys complement existing techniques for touch screen interaction.
Total citations
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Scholar articles
PA Albinsson, S Zhai - Proceedings of the SIGCHI conference on Human …, 2003