LinkRing: A Wearable Haptic Display for Delivering Multi-contact and Multi-modal Stimuli at the Finger Pads
Aysien Ivanov, Daria Trinitatova, Dzmitry Tsetserukou

TL;DR
LinkRing is a wearable tactile device that delivers multi-contact and multi-modal stimuli to the finger pads, enabling complex tactile feedback for virtual and augmented reality applications.
Contribution
The paper introduces a novel wearable haptic display with dual contact points capable of delivering shear, twist, slippage, and pressure stimuli, with validated high pattern recognition.
Findings
High sensitivity of finger surface to stimuli
Effective discrimination of slippage at different rates
Successful multi-modal tactile stimulation
Abstract
LinkRing is a novel wearable tactile display for providing multi-contact and multi-modal stimuli at the finger. The system of two five-bar linkage mechanisms is designed to operate with two independent contact points, which combined can provide such stimulation as shear force and twist stimuli, slippage, and pressure. The proposed display has a lightweight and easy to wear structure. Two experiments were carried out in order to determine the sensitivity of the finger surface, the first one aimed to determine the location of the contact points, and the other for discrimination the slippage with varying rates. The results of the experiments showed a high level of pattern recognition.
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