"Besides that, we receive that poll card automatically by mail about six weeks prior to the election. Without a poll card, you just don't vote. And that system with poll cards has been in place since way before I was born in 1965, one of the advantages of a functioning (legal) inhabitants registration system."
Same here in the UK, except you don't actually need to take your poll card with you. It's easier if you do, of course. I can;t see any reason why the poll card can't just be the voter ID anyway. Voter fraud is pretty low and in general the only people able to take anthers poll card and vote on their behalf are people who live in the same house. I can't see why more expensive poll cards with unique barcodes and a tablet with an app at the polling station are needed. The poll cards already have unique IDs on them anyway, ie registration number and the voters name and address.