Seán Crowe (Dublin South West, Sinn Fein) | Oireachtas source

The certificates are being emailed or posted out. What is the system there? Is it based on the length of time since someone got the second dose of vaccine? Some people are saying that they were only vaccinated a week ago and have got the certificate, while there are others who were vaccinated a number of weeks ago, more than a month ago or even longer, and they have received nothing in the post. What is the system we are using?