I've never seen a chad system. Befoer I could vote, I remember my folks voting in a booth with the levers. I thought they were way cool. Shortly before I turned 18, they got rid of those and brought in paper ballots. The candidates' names are set next to a broken arrow and to vote for them, you finish the arrow. It's then run through a scanner of some nature.

I think that the killer app for a computerized voting machine would be to allow the voters to later go back and confirm that their vote was registered properly. When I put it in the machine, I always feel like my ballot is going into a black hole.