Novel input devices can increase the bandwidth between users and their devices. Traditional desktop computing uses windows, icons, menus, and pointers – an interface built for the computer mouse and very effective for pointing-and-clicking. Alternative devices provide a variety of interactions including touch-free, gesture-based input and gaze-tracking to determine the user's on-screen gaze location, but these input channels are not well-suited to a point-and-click interface. This study evaluates five new schemes, some multi-modal. These experimental schemes perform worse than mouse-based input for a picture sorting task, and motion-based gesture control creates more errors. Some gaze-based input has similar performance to the mouse while not creating additional workload.
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