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The way you would protect them, ideally, would be to know who's vaccinated and who's not vaccinated, and the unvaccinated folks would still be required to wear a mask. And this is where politics comes in, if we had had a very simple electronic system from the beginning, basically you have a pass on your phone that turns green after you've been vaccinated, businesses and venues all over the country would be able to say,' Good news, if you have a green pass you don't need to wear a mask.'.