Explore a comprehensive analysis of voter behavior and security vulnerabilities associated with ballot marking devices (BMDs) in this IEEE conference talk. Delve into the findings of a large-scale study conducted in a realistic polling place setting, examining how effectively voters detect and report errors on printed ballots. Learn about the potential risks of BMD manipulation and the impact of various interventions designed to improve voter verification. Discover evidence-based recommendations for enhancing the security of BMD-based elections, and gain insights into the challenges of ensuring election integrity in the face of evolving voting technologies.