Re: Voting schemes
Maybe look more recently than a few decades ago? I have for one or two decades been hearing talks about voting schemes that allow voters to check not just their vote but the correctness of the whole count. For example, https://warwick.ac.uk/news/pressreleases/university_of_warwicks_secure_e-voting_software_used_in_first_real-world_election_1/ is press release blurb about something I probably saw about 10 years ago. I recall another scheme from Australia a while ago too, with much the same list of properties.