Some people don't like the idea of COVID vaccine passports because it somehow infringes on liberty or human rights or something like that. This includes Ron DeSantis, the governor of Florida and an alumnus of Yale and Harvard Law School and a former JAG Corps officer at Guantanamo Bay (which is to say a smart guy who knows a thing or two about liberty and human rights).
I think this position is wildly overblown.
If you want to attend public schools you have to show proof of vaccination. Yes, you can obtain a waiver in many states for religious or philosophical reasons, but either way your local school district knows whether your kids have or haven't been vaccinated for various things.
Many other countries require visitors to get vaccinated for Yellow Fever before they can enter. So, for example, if you want to visit Angola or Benin you have to show proof of vaccination. To make this easier, WHO even has an international certificate of vaccination or prophylaxis, or ICVP, to carry with you to these places. A vaccine passport, if you will. So when you go to these places their governments know you've been vaccinated for various things.
If you want to leave the US and go to another country, you need ... a passport! I have one and you probably do too. Getting it required a bunch of paperwork, a photo, a fee, and an inordinately long wait but now I can leave the country and get back in. As a result, the government knows a bunch of things about me and so do the governments of the foreign places I visit. That's just the cost of travel.
Sharing information about yourself with your government is the cost of citizenship. We share health information all the time (see my school example above; see also anyone over 65 who uses Medicare). This circumstance shouldn't be any different.
At the end of the day which is worse: a bunch of bureaucrats knowing that you got the COVID shot, or dealing with more masking/distancing/shutdown precautions? So lighten up Ron.
