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Scantegrity is a security enhancement for optical scan voting systems. It's part of an emerging class of "end-to-end" independent election verification systems that permit each voter to verify that his or her ballot was correctly recorded and counted. On the Scantegrity ballot, each candidate position is paired with a random letter. Election officials confirm receipt of the ballot by posting the letter that is adjacent to the marked position. Scantegrity is the first voting system to offer strong independent verification without changing the way voters mark optical scan ballots, and it complies with legislative proposals requiring "unencrypted" paper audit records.