The neighborhood already has the screamy man on a bicycle who hurls expletives at people wearing masks. Yesterday, a member of the Jamaica Plain Facebook group reports, a guy was walking up and down Centre Street trying to get stores to post signs (which he conveniently had with him) that maskless people are welcome there and that the stores realize they can't ask customers why they're not wearing masks because of "HIPPA" and the Fourth Amendment.
Where to begin?
First, it's HIPAA - Health Insurance Portability and Accountability Act - which only relates to the privacy of medical information held by health-care providers. The Fourth Amendment just doesn't apply here. The law you want, Mr. Sign Poster, is the Americans with Disabilities Act, which, yes, bars stores from asking you the specifics of your medical condition. Only you'd still be wrong because the act includes a "direct threat" provision that lets stores ban people who might pose harm to workers or other customers, such as, oh, not wearing a mask during a pandemic.