only those with summat to hide should fear ID cards ...... just about every Eu citizen carries some form of national ID and are obliged to. the ability to prove who you are with one simple piece of ID is IMHDO a great idea .... could end up with a serious round up of ne'er do wells, illegals, Pikies

, and anyone else who currently 'lurks' below the radar ..... bring it on
as for .....
I don't like the idea for numerous reasons:
There is no reason ID cards would be used to sort out your list ne'er do wells. Most could be sorted now with a bit more will and less political correctness.
It is another imposition on normal law abiding people - the "bad guys" will get round it as always. It is not like there is no tax evasion or organised crime in the EU
It is too open to abuse. You will need it to purchase some items, then entry to certain places, then to purchase more and more items and entry to more and more areas and with modern tech before you know it you will be comletely controlled as to where you can go and what you can buy by some algorithum that decides you used unsafe words in a posting on the internet.
Why not inject it into people like microchipping pets? - they can't lose it or accidentally leave it somewhere
I've read 1984, it was supposed to be a warning, not an instruction manual.