Performing selections of small targets using the gaze only is hindered by the limited accuracy of gaze tracking. This project explores the potentials for small-target selection using existing activation methods (single- and two-step dwell) and a novel zoom activation method in single- and multiple-target layouts.
We have found the standard single-dwell selection to be inferior to all other methods in terms of hit rate, pointing time and selection time. Furthermore, the two-step activations proved to be significantly more accurate than zoom activations, we found shorter selection times using the zoom activation than using two-step activation. In addition, participants found the two-step dwell method as more fatiguing than zoom. In conclusion we believe that zoom activations holds potential to assist small-target selection with gaze only.
Finally, we present an interface that allows users to switch easily between the three different activation methods using gaze only, supporting universal access to the Windows environment for people with motor disabilities.