[stenius]

That doesn't solve my concern. If your boss at work tells you to go vote and then demands you show your receipt when you get back it wont matter that your name isn't on it. You would be pressure to vote how they told you to.

The proof would be a paper ballot that you turn in. Your actual vote.

[space_fountain]

These machines, generally print out a receipt. Show it to you and store it in a bin so that it can in theory be counted.