Exploring tapping with thumb input for flexible tablets

Flexible displays offer new interaction techniques, such as bend gestures, but a little work has been done to support touch input, the most common input for handheld displays. In this paper, we explore touch input using the thumb of the holding hand, and compare it for different tapping tasks, between a flexible and a rigid tablet. We present initial design guidelines to use touch input with thumb in flexible devices. Our result suggests that users can perform tapping interaction using thumb input in both rigid and flexible devices with similar accuracy, and they prefer holding the display on the side or the bottom corner over the bottom center.