The European Commission’s proposed Digital Green Certificate will have a modest impact on the European Union’s tourism and hospitality sectors in the short term. But lingering questions on how COVID-19 immunity works and data privacy issues could complicate the implementation process. The European Commission unveiled on March 17 a plan to create a Digital Green Certificate with verified information on people’s COVID-19 status. If approved, the certificate will be proof that a person has been vaccinated against COVID-19, received a negative test result, or recovered from the virus. The certificate will be available in digital or paper format and will include a QR code to ensure its authenticity. ...