Sixteen countries have begun using the EU's 'Digital COVID certificate' (EUDCC) to enable their citizens to easily travel across the bloc.
The European Commission says fifteen member states - Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Germany, Greece, Latvia, Lithuania, Luxembourg, Poland, Portugal and Spain - have connected to the gateway and started issuing the first certificates.
They are joined by Iceland, which is the first of four European Economic Area countries to join the scheme.
Formerly referred to as the EU Digital Green Certificate, others will be expected to follow suit when its functions are deployed continent-wide by the 1st of July.
The certificate is available in digital or paper form and is free of charge. The gateway allows for all certificates' QR codes to be accessed.
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