Information. If you come to stay in Ireland for more than 3 months, and you are not a citizen of the European Union (EU) , the European Economic Area (EEA) or Switzerland, you must register your presence in Ireland with An Garda Siochana. sÃ­ochÃ¡nanformation. If you come to stay in Ireland for more than 3 months, and you are not a citizen of the European Union (EU) , the European Economic Area (EEA) or Switzerland, you must register your presence in Ireland with An Garda Siochana. sÃ­ochÃ¡na