All mail-in ballots require a fingerprint, placed on file during registration to receive mail-in ballots. Walk-in voting at a precinct to receive purple dye on a finger to prevent duplicate voting, and a check of real-ID prior to voting.
Best way to reduce fraud is to prevent it. Alternative way to prevent fraud is to eliminate democrat workers who handle ballots, including mail deliverers.
Wouldnt work. States control the elections. Thats why we are going to loose everything this November.