Earlier quoted context omitted.
From the UK and listening to people who don't have things like passports, it sounds like it'll make proving your right to work much easier for people, too. I've spoken to friends who have foreign relatives and they've also pointed out the problem the UK has which is: 1. To open a bank account you need an address 2. To rent somewhere (get an address), you need a bank account 3. See above The same happens for children…
In the US you can just tell the bank an address and they will type it in the computer. They make zero effort to verify it. They will even print a piece of paper with that new address on it that you can take down to the DMV and get an ID with that address printed on it. Is this a lot different in the UK?
A savings account you don't need proof of address but I think most will ask for your NI (social security) number. Some will send snail mail to the address you provide to enable withdrawals.