TickTockRay Demo: Smartwatch Raycasting for Mobile HMDs

Abstract

We demonstrate TickTockRay, an implementation of fixed-origin raycasting technique that utilizes a smartwatch as an input device. We show that a smartwatch-based raycasting is a good alternative to a head-rotation-controlled cursor or a specialized input device. TickTockRay implements fixed-origin raycasting with the ray originating from a fixed point, located, roughly, in the user's chest. The control-display (C/D) ratio of TickTockRay technique is set to 1, with exact correspondence between the ray and the smartwatch's rotation. Such C/D ratio enables a user to select targets in the entire virtual reality control space.