If you're referring to provisional ballots, those precincts generally require the person to return to the board of elections within 10 days and provide some form of ID.

If you're referring to a normal ballot, I've not seen anywhere that doesn't require some proof of residence and identity, like a very recent bank statement matching the registered address for that voter.

For that to be an issue, someone would have to:

1) Obtain a recent bank statement for a registered voter

2) Show up, in person, at the correct polling location

3) Commit a felony by lying to the poll workers and voting illegally

4) Hope nobody who knows the real person hears them claim to be that person

5) Hope the person doesn't show up and try to vote