Almost 300 fraudulent Covid-19 passport claims have been rejected in Northern Ireland.
The figure emerged after the North’s vaccine certification system was dogged with technical difficulties last week.
It was partially suspended on Tuesday after issues with data sharing emerged.
The new CovidCertNI app enables users to show proof of vaccination for international travel.
Dr Eddie O’Neill, who leads the programme, said on Monday that it is now “stable and running well”.
He also revealed that 294 applications where people have fraudulently tried to claim a certificate have been rejected.
“We had three individuals who made 38 applications between them, putting in different vaccination dates every time,” he told the BBC.
However, he said the programme has issued 5,843 certificates in 27½ hours.
“The system is stable, it’s running well, we did everything as we said we would do it, we released it in phases and now people are hopefully feeling a bit less anxious,” he said.
The vaccine certificates are valid for three months once issued.
Those planning to travel on and between August 4th and 10th can apply via the NI Direct website.
Meanwhile, on Monday new changes to international travel meant passengers from European Union amber-list countries and the United States who have had two jabs no longer had to self-isolate upon arrival. – PA