When acting Danish finance minister Morten Bødskov announced last week that Denmark would soon launch a digital “corona passport,” the news spread rapidly around the world. For many, the promise of an app that would enable people to prove they were vaccinated against covid-19 or otherwise immune was exciting: it suddenly put international travel, restaurant…

When acting Danish finance minister Morten Bødskov announced last week that Denmark would soon launch a digital “corona passport,” the news spread rapidly around the world. For many, the promise of an app that would enable people to prove they were vaccinated against covid-19 or otherwise immune was exciting: it suddenly put international travel, restaurant…