ACM 978-1-4503-0268-5/11/05.

Target selection on mobile devices with touchscreens usually gets users into trouble due to the occlusion of the target by the user’s finger and ambiguity about which part of the finger generates the result point. In this paper, we propose a novel technique to enhance target selection on touchscreen-based mobile devices, named RegionalSliding, which selectively renders the initially “selected ” target as well as its “surrounding” targets in a non-occluded area when users press down on the screen and enables users to complete the selection with sliding gestures according to the visual feedback from the rendered area. A preliminary user study shows that RegionalSliding increases the selection accuracy and brings good user experience