  TouchVR is a novel wearable haptic interface which can deliver multimodal
tactile stimuli on the palm by DeltaTouch haptic display and vibrotactile
feedback on the fingertips by vibration motors for the Virtual Reality (VR)
user. DeltaTouch display is capable of generating 3D force vector at the
contact point and presenting multimodal tactile sensation of weight, slippage,
encounter, softness, and texture. The VR system consists of HTC Vive Pro base
stations and head-mounted display (HMD), and Leap Motion controller for
tracking the user's hands motion in VR. The MatrixTouch, BallFeel, and RoboX
applications have been developed to demonstrate the capabilities of the
proposed technology. A novel haptic interface can potentially bring a new level
of immersion of the user in VR and make it more interactive and tangible.
