Can Voters Detect Malicious Manipulation of Ballot Marking Devices? Posted on 2020/01/10 by Carl Robitaille Can Voters Detect Malicious Manipulation of Ballot Marking Devices? Can voters detect malicious manipulation of ballot marking devices?To find out, @UMBernhard and our @UMich team had 241 people vote on BMDs we secretly hacked to change every printout. Voters missed >93% of errors!Full study published today at @IEEESP:https://t.co/5FrygIGtZL— J. Alex Halderman (@jhalderm) January 8, 2020