[so_real]

Purple Thumbs.

Agreed! Been suggesting that for years. There is also a dye used when donating blood plasma that is only visible under ultraviolet light. That might be just the ticket too. Cheap, easy, irrefutable.

[Hunton Peck]

It’s certainly something that would prevent multiple votes in person, but there’d still be problems with absentee ballots and votes by people who shouldn’t be voting at all, and those who vote in close elections where they don’t reside instead of walkovers in their home districts.

[bboop]

Yes, irrefutable. And you don’t have to know how to read or write, so the Democrats should embrace it.