@lashman with the IDP debacle can you believe that there are districts that want to go to paperless voting? It seems like a no brainer; no mater how the vote is taken the voter should have the opportunity the review a physical copy and that copy should be kept for verification purposes if needed.
In 2003 Belgium had a voting issue that was deemed an error due to a cosmic ray. Source:
https://www.wnycstudios.org/podcasts/radiolab/articles/bit-flip