Source: The Economist
Date: 9 August 2021
Proof of vaccination or recovery from infection is increasingly being demanded, not just for international travel but also within countries. Dozens of countries now require digital health certificates for access to certain services. These commonly use a scannable file which can verify the holder’s identity and whether they have built up immunity to covid-19 through vaccination or recovery from infection. Moreover, some systems include negative test results or medical exemptions. These passes are intended to make congregating safer and, in some cases, also to spur people to get jabbed.
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