Not directed specifically at @RFC55 but everybody needs to consider what's actually going down with this, they're doing it here bigtime and it's scary.
Careful what you wish for, once vax passports are accepted by the public as the key to "freedoms" I wouldn't put it past the bastards to continue shifting the goalposts in order to keep your passport "valid".
See Israel, they went from 85% vaccinated to 52% overnight because you were invalid without a booster from Oct 1st. Real world data, not Pfizer sales leaflets, suggests efficacy wanes after 2 months. Do you really want to be getting jags 3 or 4 times a year to keep your freedom of movement and whatever else they decide to link to it?