When people do not comply their objectives fail. Not complying is so obvious words are not even needed most of the time. I was only challenged once at the store and asked why I was not wearing my mask. All I said was legal reasons. They waited a moment and I provided no further information. I am not required to explain what legal reason or medical reason. if it had gotten to that point then I would have had my attorney provide them the reason. She backed off. I showed some people the stores sign. A page of why they demand you wear a mask. In smaller print at the bottom it stated exceptions for medical or legal reasons. How many read the whole sign ?