I think you are vastly underestimating the difficulty in automating this. This has been proposed for decades and there is published academic research about the

I think you are vastly underestimating the difficulty in automating this. This has been proposed for decades and there is published academic research about the extraordinary difficulty of ensuring the integrity of the voters and the tallies. You can look at literature on the challenges with REAL ID implementation or Healthcare.gov for similar and smaller projects.