Immunity passports pose practical as well as ethical risks

Examples
Date

Even before anything like an official immunity passport has become available, users of online dating sites are finding that some prospective dates are pushing for in-person meetups by claiming that either they’ve tested negative for the coronavirus or have positive antibody tests showing that they’ve recovered from it and presume that they are now immune. Estonia and Chile are both planning immunity passport systems. However, Robert West, a professor of health, psychology, and behavioural science at UCL, argues that immunity passports would create a multi-tier society and increase levels of discrimination and inequity and are really driven by commercial motivations.
https://www.bbc.com/news/business-53082917
Writer: Andrew Webb and Business Daily
Publication: BBC