Seems to be a bit of a row about 'vaccine passports'.
Personally I can't see what the problem is.
We are not talking about mandatory/compulsory vaccination as exists already in 11 EU countries (see attached). Vaccine passport could easily show those who are exempt e.g. for duration of pregnancy.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6001041/
As for those who are worried about the science or have 'religious' objections I would be a lot happier if I did not have to share Wetherspoons or Waitrose with stupid people who might infect me and others.
Perhaps they could even be used for voter ID for those who don't have a passport or driving license?