i don’t know anywhere that has done this but in plenty of countries you’re obliged to carry ID with you at all times.
Poor effort.
For the first part you are right, no country has what some people are asking to be implemented for bikes in Ireland. That is reg plates for bicycles. One has to wonder as to 'Why', or has PROC cracked it?
The second part. Well if you want to advocate that everyone walking the street MUST carry an ID and show it if asked by the Gardai, then go ahead and lobby your local TD for that change. Put it simply would not get public support in this country. Thats the trouble with being in a Republic. You cant implement a law for one person and not the other.