Increasing the accessibility of pen-based technology: an investigation of age-related target acquisition difficulties

This paper describes the author's dissertation research on improving the accessibility of pen-based technology. The first step for this research was to gather information on the underlying causes of target acquisition difficulty. To meet this goal, a controlled laboratory study was conducted, which uncovered three sources of difficulty: slipping, drifting, and missing just below. The remaining work will be to address these difficulties by implementing new interaction techniques and experimentally evaluating their effectiveness.