Wrist Whirl: One handed Continuous Smartwatch Input using Wrist Gestures

We propose and study a new input modality, WristWhirl, that uses the wrist as an alwaysavailable joystick to perform onehanded continuous input on smartwatches. We explore the influence of the wrists biomechanical properties for performing gestures to interact with a smartwatch, both while standing still and walking. Through a user study, we examine the impact of performing 8 distinct gestures (4 directional marks, and 4 freeform shapes) on the stability of the watch surface. Participants were able to