The cyber attack against the HSE has been cited as the reason for the delay.
Ireland will be the only European Union member state not ready to comply with the EU Digital Covid Certificate for travel as it comes into effect tomorrow, according to The European Commissioner for Justice Didier Reynders.
The document, which may be presented in a digital or paper format, will prove that a person travelling throughout the EU has either been vaccinated against Covid-19, has a recent negative test result, or has recently recovered from the virus.
Reynders stated during a briefing in Brussels that the reason for Ireland's delay in complying was last month's cyber attack against the HSE.
He said: "I want to confirm that now we have a real good evolution with all the member states, except Ireland, til now.
"Due to a cyber attack in Ireland, it was difficult to reach the goal to have all the technical solutions in place before the 1 July.
"But for all the other member states, we don't have any concern about the way to proceed".
Reynders also said he recommended the EU Digital Covid Certificate be used not just to facilitate travel but also for attending concerts, festivals, theatres and restaurants.
He said: "The certificate is a tool and we recommend to all the member states to use such a tool not only for the free movement, like we are organising with the regulation, but also for all the possible national uses... to go to concert, festival, theatre, restaurant."
