DualPad: Exploring Non-Dominant Hand Interaction on Dual-Screen Laptop Touchpads

Dual-touchscreen laptops present opportunities for providing an expansive touchpad on the lower touchscreen. This expanded touchpad offers space for the engagement of both the dominant and non-dominant hands. In this context, it is necessary to redefine the role of the non-dominant hand. Therefore, we propose DualPad for dual-touchscreen laptops, which provides a long touchpad on the lower touchscreen. The non-dominant hand can utilize this DualPad to execute Touch Shortcut / Modifier, analogous to keyboard shortcuts and modifier keys on single-screen laptops. Moreover, we propose Dual Cursor as an example of bimanual interaction. In the demonstration, participants are expected to utilize the custom presentation program to create the given slide using two distinct methods. First, they employ the default layout of the virtual keyboard and virtual touchpad provided on the dual-touchscreen laptop. Then, they utilize DualPad for comparison.