Irish tourists have been enjoying the return of international travel in recent months - and few locations are as popular as Spain.
The Digital EU Covid Cert has allowed travellers to head abroad to destinations across the continent.
And when they were first established, all vaccinated passengers were allowed to head to Spain without the need to book a further test.
However with the rollout of the booster campaign and fears growing over the Omicron variant, two doses could soon not be enough to be considered "fully vaccinated" - depending on when you received your jabs.
The European Commission confirmed this week it is set to bring in a validity period for Covid certificates in February.
The Commission said it had adopted a “binding acceptance period of nine months (270 days) of vaccination certificates for the purpose of intra-EU travel”.
This would mean that if you received your second jab more than nine months ago, you would need to show proof that you had received a booster.
The new measures will have to be approved by EU member states in order to take effect on February 1.
The move was made after a number of EU countries had announced measures that mean those who have not yet received the booster jab were no longer considered “fully vaccinated”.
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France has said adults who received their second dose more than seven months ago would no longer be eligible for a Covid cert from January 15 unless they could show proof of a third vaccination.
While Portugal, Cyprus, Latvia, Italy, Greece and Austria have also said all travellers, whether they are vaccinated or unvaccinated, must take Covid tests before arrival into the country as they attempt to stem the spread of the Omicron variant.
EU justice commissioner Didier Reynders said the European Union needs to “adjust to changing circumstances and new knowledge”.
He said: “unilateral measures in the member states would bring us back to the fragmentation and uncertainties” that, before the EU Covid certificate was introduced in July, saw testing and quarantine barriers spring up to travel in the EU.
“It’s now up to the member states to ensure boosters will be rolled out swiftly to protect our health and ensure safe travelling.”
