Abstract
This paper presents the results of an experiment comparing three commercially available pointing devices (a trackball, gyroscopic mouse and Twiddler2 mouse) performing selection tasks for use with wearable computers. The study involved 30 participants performing selection tasks with the pointing devices while wearing a wearable computer on their back and using a head-mounted display. The error rate and time to complete the selection of the circular targets was measured. When examining the results, the gyroscopic mouse showed the fastest mean time for selecting the targets, while the trackball performed with the lowest error rate.
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