No shirt, no shoes, no vaccine – no service.

That's the future critics of "vaccine passports" fear as Americans vaccinated against COVID-19 can safely live more normal lives, including spending time in most indoor settings without a mask.

The notion that a "passport" could separate the vaccinated from the unvaccinated has sparked fears of a dystopian future where people's health decisions would limit where they could travel, where they could shop, what events they could attend and whether they would be asked to wear a mask.

Many states have taken a stand against that possibility.