Demo of FlowRing: Seamless Cross-Surface Interaction via Opto-Acoustic Ring

We demonstrate FlowRing, a ring-form-factor input device that enables interaction across a range of ad-hoc surfaces including desks, pants, palms and fingertips with seamless switching between them. This versatility supports systems that require both high precision as well as mobile control, such as mobile XR. FlowRing consists of a miniature optical flow sensor, skin-contact microphone, and IMU, providing a unique ergonomic design that rests at the base of the finger like conventional jewelry. We show the potential of FlowRing to enable precise control of interfaces on available surfaces via music player application and whiteboarding application.