People may think that identity cards in the UK are a new idea .. but no
Here are two identity cards one from the first world war the other from the second
All civilians, including children, had to carry an identity card at all times to show who they were and where they lived. The identity card gave the owner's name, address and previous addresses. Each person was allocated a National Registration number which was written on the inside of the card. The local registration office stamped the card to make it valid.
Identification was necessary in case families became separated in the event of bombing or if the children were evacuated to another part of the country. People also had to produce their identity card along with their ration book when they were claiming their share of food or clothes.
The British wartime identity card scheme was abolished in 1952.