[blasteye]

Just have a SMS message texted to voters once their vote is counted with a link to a scan of their paper ballet. Would make voter fraud a bit harder as each person could validate their vote was correctly counted. If the voter doesn't get their SMS, then provide a 1800 number for them to figure out what happened. This would only stop the changing and non counting of a real voter, but does not stop fake voters from adding their vote....which would need a diff fraud protection scheme.

[pjc50]

Voters must not be allowed to prove to others how they voted. That's also a disaster scenario of a different kind. Not just vote selling but voter intimidation.

[crack-the-code]

"If you vote Bob for President and provide proof of your vote, we will give you a free iTunes gift card!"

[glaslong]

"We're a Bob for President family, through and through. Everyone get out there and vote, then show me the receipt."

[monocasa]

"Hey, did you know that if you forward your receipt to this website with a bitcoin wallet address, they'll send you as much as $20 depending on how you voted?"

[ianferrel]

Hasn't that ship sailed?

We're all carrying cameras into the voting booth.

[brassic]

Here in the UK you can ask for a replacement ballot paper if you make a mistake.

So you vote for candidate A, photograph it, swap it for a replacement ballot, vote for B, photograph it, etc. and get paid by all the candidates.

Except the candidates know that a photo of a ballot paper proves nothing.

[pjc50]

Yes, although (in the UK) it's an offence to photograph your ballot paper and the voting privacy screens are pretty minimal.

[losteric]

How would that prevent voter fraud? I could send you a confirmation for voting one way despite counting your vote differently in the aggregate.