Voter-verified paper audit trail

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Voter verifiable paper audit trail (VVPAT) or verified paper record (VPR) is a method of providing feedback to voters who use an electronic voting system. A VVPAT allows voters to verify that their vote was cast correctly, to detect possible election fraud or malfunction, and to provide a means to audit the stored electronic results. It contains the name and party affiliation of candidates for whom the vote has been cast. While VVPAT has gained in use in the United States compared with ballotless voting systems without it, hand-marked ballots are used by a greater proportion of jurisdictions. As a paper-based medium, the VVPAT offers some fundamental advantages over an electronic-only recording medium when storing votes. A paper VVPAT is readable by the human eye and voters can directly interpret their vote. Computer memory requires a device and software which is potentially proprietary. Insecure voting machine records could potentially be changed quickly without detection by the voting...

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