Why do you need voter ID?
If I go to the polling station in the UK, I could bring along an ID, a passport, a birth-certificate, a drivers-license and 6ft-tall-portrait of myself in oils and I still wouldn’t be able to fraudulently vote because if my name wasn’t on their list, they wouldn’t give me a ballot a paper. They don’t ask for any sort of identification because they have no need to.
Once they hand me the ballot, I put a pencil cross next to the candidate and drop it into the box. They cross my name off. It doesn’t have to be that complicated.
(Getting yourself fraudulently onto the list before hand is another discussion but a voter ID wouldn’t make any difference to that either)