As the New York Times is reporting, if you "want to party, you might need a 'vaccine passport," since, "at some parties and nightclubs, C.D.C. vaccination cards are the new velvet rope." Similarly, CBS News notes that "sports stadiums [are] asking fans for their 'vaccine passports.'"
And even more comprehensively, ABC TV News reports that "vaccine passports could be used for travel, concerts, sports as life returns to normalcy," noting that "historically, a yellow fever vaccine card was used for the past 50 years and was recognized internationally."
Also, a growing number of universities will require students to present proof this fall that they have received the COVID vaccine, just as many schools for a long time have required younger students to establish that they have received other vaccinations.