  Immersive technologies, including augmented and virtual reality (AR & VR)
devices, have enhanced digital communication along with a considerable increase
in digital threats. Thus, authentication becomes critical in AR & VR
technology, particularly in shared spaces. In this paper, we propose applying
the ZeTA protocol that allows secure authentication even in shared spaces for
the AR & VR context. We explain how it can be used with the available
interaction methods provided by Head-Mounted Displays. In future work, our
research goal is to evaluate different designs of ZeTA (e.g., interaction
modes) concerning their usability and users' risk perception regarding their
security - while using a cross-cultural approach.
