Don't know but there has to be a way of fixing this disaster we call an election. This is nothing new and should have been fixed eons ago! Will it be done this time? I won't hold my breath waiting since it's DC that would have to fix it.
The IRS seems to know how to keep track of people and things. Maybe ask them? (a bit of sarcasm) How about treating ballots like paper money and adding things like holograms and water marks so you can spot real ones and make it impossible to fake one? Get as much of the human factor out of it too! The more hands in there, the more cheating can happen such as throwing Trump ballots on the side of the road??? (that would never happen, would it?)
I'd also like to suggest mail in ballots only be used if the person won't be in the area to vote in person or they can't get around for some health reason. These should be verified too. Also, none of this voting for a month ahead of time! The longer it goes on, the easier it is to manipulate it. Make it in person for maybe 3-4 days?
Just a few things rattling around in my head.