DEF CON 33 - Voting Village - Regulatory Failures with Ballot Marking Devices - Marnie Mahoney @DEFCONConference
DEF CON 33 - Voting Village - Regulatory Failures with Ballot Marking Devices - Marnie Mahoney  @DEFCONConference
Uploaded November 2025 | Updated September 2026, 2 weeks ago
The most obvious, fundamental problem with Ballot Marking Devices is encoding voters’ choices in images voters cannot read and tabulating from those images. Compounding BMD problems, these systems produce at least three distinct images of voters’ selections: the choices in QR/bar code images, a printed text list purporting to show those encoded choices, and a ballot image produced by precinct scanners. These images and printed list may be subject to different possible
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DEF CON 33 - Voting Village - Regulatory Failures with Ballot Marking Devices - Marnie Mahoney

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