Absolutely, it appears that audio is the most suitable interface for use in public settings. Any other device that might obstruct vision could potentially pose

Absolutely, it appears that audio is the most suitable interface for use in public settings. Any other device that might obstruct vision could potentially pose a safety risk. This is not only due to the blocking of visual input but also because it could display distracting content when one is in a real-life situation that requires complete visual attention.