Earlier quoted context omitted.
I really don't understand how. Ireland doesn't require ID either. You could visit Dublin on the ferry from England showing no papers other than your ferry ticket, bought for cash as you walked on to the boat, and I'm pretty sure vice versa. Even when there were the armed checkpoints between North and South. Did this quite a few times. I see no significant support for an "Iexit", so it can't be connected with ID, or a…
All the EU countries except for Denmark, Ireland and UK have identity cards. All the EU countries except for Ireland and UK are part of the Schengen Area (or are obliged to join in the future, for some recent members). It remains to be seen what Ireland status is once UK is out, depending on what kind of border is put in place between them. The trend in the EU is for more control (regarding IDs and in many other issu…
The Irish Government like to deny it, but I'd argue that the "Public Services Card" (https://psc.gov.ie/) is a de-facto ID card (and hence central ID database).