Independent verification systems

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Independent verification (IV) systems or Independent Dual Verification (IDV) are voting machines that produce at least two independent auditable records of votes where the second record is used to check the first. To be considered "independent" at least one of the records must not be editable by the voting machine and be directly verifiable by the voter. These systems must allow for the multiple records to be able to be cross-checked. [1]

A voting machine is a machine used to register and tabulate votes. The first voting machines were mechanical but it is increasingly more common to use electronic voting machines. Traditionally, a voting machine has been defined by the mechanism the system uses to cast votes and further categorized by the location where the system tabulates the votes.

The goal of an IV system is to increase the security, and maintain the integrity of the voting tally. The theory is that any corruption would need to corrupt two separate records to be undetected by an audit.

IV systems can include some Voter Verified Paper Audit Trail (VVPAT) systems, End-to-end auditable voting systems, witness systems, and some optical scan voting systems. [2]

End-to-end auditable or end-to-end voter verifiable (E2E) systems are voting systems with stringent integrity properties and strong tamper resistance. E2E systems often employ cryptographic methods to craft receipts that allow voters to verify that their votes were counted as cast, without revealing which candidates were voted for. As such, these systems are sometimes referred to as receipt-based systems.

An optical scan voting system is an electronic voting system and uses an optical scanner to read marked paper ballots and tally the results.

See also

Software independence

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