If someone really wants to commit voter fraud, showing a plastic card at the polls isn’t the thing that’s going to stop them. States without photo-ID laws still verify people through registration checks, signature matching, electronic poll books, and audits. You can’t just stroll in, vote as “Bob Smith,” and disappear into the night — the system would flag it long before your imaginary crime spree got off the ground.
Pretty much the same as we've been doing since before you were in diapers.