A researcher compared the virtual reality experience with two different systems: the one with VR headsets versus one with an immersive projection system using a concave-spherical screen, developed by his research team and called Hybrid Virtual Environment 3D (Hyve-3D). He immersed 20 subjects whom preferred the virtual reality without headsets, because they could interact with other viewers and share their impressions in real time.
Source: Virtual reality: Hybrid Virtual Environment 3D comes to the cinema
