Vaccine Passports Are Here to Stay. Why Worry?

“Yeah I use the pass. What should I be afraid of?” That’s Jack, a friend who works in state and city politics, responding to a poll I posted on Facebook about digital Covid-19 vaccination passports. “Are you using one? Why’d you download it instead of using the paper card? Do you have any fears about it?”

The responses were untroubled. Using it: mostly yes. “Now that theater is back, [New York] Excelsior passes are handy, since proof of vax is mandatory,” wrote a critic. A retired teacher noted that the app...