In California (which has a lot of vote by mail), it’s also legal to use a camera in the voting area. In this regards, I don’t think there’s particular weaknesse

In California (which has a lot of vote by mail), it’s also legal to use a camera in the voting area. In this regards, I don’t think there’s particular weaknesses. In general the voting system can guard against false positives or false negatives. By that it can either bar legitimate voters or allow illegitimate voters. Since the USA has a historic tendency of barring the poor, minorities and women from voting; elections officials should take that into account when considering trade offs.