  Virtual Reality (VR) headsets can open opportunities for users to accomplish
complex tasks on large virtual displays, using compact setups. However,
interacting with large virtual displays using existing interaction techniques
might cause fatigue, especially for precise manipulations, due to the lack of
physical surfaces. We designed VXSlate, an interaction technique that uses a
large virtual display, as an expansion of a tablet. VXSlate combines a user's
headmovement, as tracked by the VR headset, and touch interaction on the
tablet. The user's headmovement position both a virtual representation of the
tablet and of the user's hand on the large virtual display. The user's
multi-touch interactions perform finely-tuned content manipulations.
