They probably singled out Irish citizens because Ireland (just like the UK) doesn't provide ID cards... But they have a "passport card" https://www.citizensin

They probably singled out Irish citizens because Ireland (just like the UK) doesn't provide ID cards... But they have a "passport card" https://www.citizensinformation.ie/en/travel-and-recreation/passports/irish-passport-card/ https://www.citizensinformation.ie/en/travel-and-recreation/... I don't see why Bundespolizie would have had to treat people differently, alas it's usually difficult to argue with a foreign country border police