Ringteraction: Coordinated Thumb-index Interaction Using a Ring

Ringteraction: Coordinated Thumb-index Interaction Using a Ring


Sarthak Ghosh, Heong Cheol Kim, Yang Cao, Arne Wessels, Shengdong Zhao




The thumb has the unique property of being opposable to the other fingers and is thus used to perform specific tasks such as grasping objects, which cannot be done otherwise. In this paper we present an interactive ring that takes advantage of this biomechanical advantage, by enabling thumb-index interaction. We propose a set of gestures involving the coordinated movement of the thumb against the proximal phalanx of the index finger that we call bi-digit interaction. Further, we present several scenarios where performing bi-digit interaction is quick, easy and advantageous for users.

Author Keywords

Joint interaction; Smartphone; Ring; Wearable
Computing; Bi-digit interaction; Mobile computing.

ACM Classification Keywords

H.5.2 [User Interfaces]: Input devices and strategies,
Interaction styles.


Shen is an HCI professor at the National University of Singapore working on realizing his vision of HeadsUp Computing, a new Interaction paradigm that can transform the way we live and interact with computers. In his free time, Shen loves to read, run, spend time with family and friends, and explore nature.

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