Quote Originally Posted by CAMiller View Post
There is a difference between proving ID and proving the right to be somewhere, passports and visas are intended to do that.

Whenever I'm there and asked to prove my ID (usually when I'm using my unsigned CC as here in the US you are advised not to sign them) I show my US driver's licence which has a photo of me and a copy of my signature on it. It proves I am who I say I am, not that I'm in the UK legally or not.
CAM, do you think we'll ever see one of these again in our lifetime?

The government introduced National Registration Identity Cards in World War II. Everyone, including children, had to carry an identity (ID) card at all times to show who they were and where they lived. The identity card gave the owner's name and address, including changes of address.