How did you get there? Vaccination requirements have been a thing for decades in many countries. Showing proof of vaccination to go to the mall or cinema isn't tracking anyone ( with the EU implementation at least, can't talk about all of them) about anything - it's just an app reading a QR code and deciding if it's valid locally, no internet required. Heck, in France the government explicitly stated nobody has the right to ask for an ID to verify you're the actual owner of the vaccine certificate ( bar age-restricted places like bars that have had that right anyways).
Why do people always have to jump to the slippery slope fallacy when anything happens? It's good to be cautious, but you're taking it to paranoia level.