That brings up an interesting question. Before the pandemic, there were many places of business were face coverings were not permitted for security reasons. You couldn't, for example, walk into a bank with a mask on. The usefulness of security cameras, for instance, is significantly decreased if you cannot see someone's face. Once the pandemic is over, I wonder if businesses will continue to allow people to wear masks if they choose to do so, or if they will go back to the pre-pandemic rules of no face coverings.