I don't know the scheme used, but _you_ also need to be able to verify that the vote was counted correctly in this situation. So make sure you read the receipt.

It's better than what we have. Vote-changing can be uncovered by an audit. ... But I still prefer the coercion-resistant systems that let you verify your own vote was counted correctly after the fact. Someone else posted a link to a bunch of papers.

As several people have commented, many systems print the receipt, which you then hand in to be counted. That’s the way my state does it, too. So you can see who your vote is being cast for.

In CA when you vote, there's a tracking mechanism you can use to see your vote was counted. A few years back I remember the ballots had a receipt you could tear off and use to verify it online later.

What would be cool is if you combined that serial number with a hash generated by filling in the ballot after the fact.

Eg you go to a page, supply your serial number and the things you voted for, and it tells you if it was counted and matches what you're saying.

Of course, this could still be used that way... but in CA ballots usually have enough options that it would be difficult for a malicious actor to have that much intent haha.

Most people would probably forget which smaller issues they voted for though.... so I dunno if it'd be reliable.