EU Digital COVID Certificate (More Info)

As Lurker said, it certifies that a person has:

• been vaccinated (with EU authorized vaccine, but member states can ALSO accept other WHO approved vaccines)
• received a negative test (within 72 hours for PCR, and where accepted 48 hours for rapid antigen test)
• or recovered (within max 180 days).

EU Digital COVID Certificate (EUDCC) holder should in principle be exempted from free movement restrictions: Member States should refrain from imposing additional travel restrictions on the holders of an EU Digital COVID Certificate, unless they are necessary and proportionate to safeguard public health.

In such a case – for instance as a reaction to new variants of concern – that Member State would have to notify the Commission and all other Member States and justify this decision.

Connected, Issuing, or Verifying EUDCC: Austria, Belgium, Bulgaria, Croatia, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Italy, Latvia, Lithuania, Luxembourg, Poland, Portugal, Spain, Iceland, Norway

Technically ready, but not connected to EUDCC: Cyprus, Hungary, Ireland, Malta, The Netherlands, Romania, Slovakia, Slovenia, Sweden, Liechtenstein, Switzerland

Italics for non-EU countries

• The EUDCC will apply until 1 July 2022, but may be extended.
• Non-EU country certificates in compliance and interoperable with the EU system can be adopted (by the Commission) on the basis they would be accepted according to the same conditions as EUDCC
• The commission is working to make their certificates compatible with countries outside the EU. IT is looking to the WHO and the International Civil Aviation Organization to establish specifications and guidance for digital documentation of vaccine status.

My friend just went to Europe and he had to get the vaccine before he went.