What happens when someone else shows up and points to the same name? I think what should happen is that it should ask the second person for proof and if they ca

What happens when someone else shows up and points to the same name? I think what should happen is that it should ask the second person for proof and if they can provide it, the initial vote has to be discarded. But how? How do we know which vote is by the first person? I assume we don't want to keep track of who voted for whom (secret ballot). President Obama was right when he said the fix to problems in our democracy is more voter participation. Imagine if close to 100% of those eligible to vote, registered and voted. Voter fraud would be insignificant.