In general, I have a strong personal code against lying of any kind. I might make an exception in the case of an evil tyranny. However, I don't see a whole lot of benefit in using a fake vaccine passport. A world where I need to show a fake vaccine passport isn't a world I want to live in, so at that point, I'd be more likely to continue resisting and deal with the consequences.How limited is your ability to lie? As in, to "get the vaccine" and your proof is a false card with a dummy lot number?
No judgment if you just want to be truthful, I might be a little too comfortable with lying about being vaxxed to acquaintances. (I don't have a false card, though.)
I won't lie to family or friends about not being vaccinated. I've been open from the beginning about the fact that I won't be getting the shot. It helps that my mom and one of my closest friends feel the same way about it.