Once people have been vaccinated against COVID-19, they’re safer to dine out, fly on airplanes, attend concerts and movies, work out at the gym, go to the office, cross borders and otherwise move about — as long as they wear masks around other people indoors, avoid large groups and keep their distance.
How can they demonstrate that they have this protection? By showing a "vaccine passport,” perhaps in the form of a smartphone app.
Israel, the U.K., the European Union and other governments are creating such digital documents, as are private organizations. President Joe Biden is assessing whether the U.S. should have them.