Escape: a target selection technique for mobile touch-screen devices
Many mobile devices have a touch-sensitive capacity and people often use their thumbs to interact with them. However, the thumb-based interaction on a mobile touch-screen device suffers from several problems in selecting a small object. For instance, the thumb is a low resolution input. Moreover, a small object is occluded by the thumb when a user tries to select it. Although a technique has been proposed to solve the second problem, it is still time-consuming for accurate selection. We propose a target selection technique, called Escape. Escape uses figure gestures cued by icon appearance to help the user disambiguate the selection quickly and correctly. The user study shows that Escape offers faster performance and comparable accuracy compared to the previous technique. Moreover, we examine the performance of Escape more thoroughly through another user study and discuss an icon arrangement algorithm.
Yatani, K.; Partridge, K .; Bern, M. W. ; Newman, M. Escape: a target selection technique for mobile touch-screen devices. Proceedings of the 26th Annual ACM Conference on Human Factors in Computing Systems (CHI 2008); 2008 April 5-10; Florence, Italy. NY: ACM; 2008; 285-294.