The one my son in law received was not a reminder; it certified completion of the vaccination. But yes, we will definitely have to develop a health pass or immunity passport that certifies people are immune for purposes of travel or going to theme parks, sports events, etc. From what I've read, several companies are working on that technology.The “vaccination cards” being given to vaccine recipients are really just handwritten reminders of which vaccine they received and when to come back for the second dose. It is not a certificate, verification, or passport.
“A COVID-19 vaccination card won't be the same as an immunity passport. Instead, it'll serve as a reminder to get your second shot of the vaccine. It also details which vaccine you received -- but that's all. It can't be used for any other purpose. Immunity passports have been used in other countries for different diseases, like polio, to give international travelers the OK to travel. The immunity passports would certify that an individual is immune to the coronavirus and can then give people more freedom to travel and socialize in public.”