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Nov 9, 2020 at 16:21 comment added UEFI If the machine flips a block of 10 votes every 1000 votes (enough to cause a 1% swing) would you notice?
Nov 8, 2020 at 21:22 comment added Hans Ekbrand The mechanism for checking is the same mechanism as when the ballots are counted, the machine doesn't know if the data is used in counting or checking. See Ron Rivest youtube video on the numberphile channel if you don't understand the concept.
Nov 8, 2020 at 18:01 comment added Frank Hopkins @HansEkbrand that doesn't sound like a solution at all. If you compromised the system, on a check simply show the 'correct' vote and otherwise count the wrong one. that's the core issue, there is no guaranteed natural line from paper slip to the final count that can be followed through by an observer. This only "works" if you trust the software system, but there is no natural way for a layman to see the connection (not even for most software developers).
Nov 8, 2020 at 14:22 comment added Hans Ekbrand "The receipt does not say anything about what vote was actually recorded." That problem is solved years ago, the voter can take the reciept and check out how it would be counted. That test invalidates the vote, but the voter can then cast a new vote, and repeat the process until the voter is sure that the vote will be counted correctly.
Nov 8, 2020 at 13:27 comment added Polygnome "that 1) the voter can see that their ballot was recorded accurately" The receipt does not say anything about what vote was actually recorded. If the machine is manipulated, it can easily print the correct receipt and record the wrong vote nonetheless. "2) a recount can be conducted based on the paper records". Only if the paper records are sealed away in an urn after being cast, at which point you are back to having a paper election, just with an automated first projection. Because everyone worth their salt would file appeals and have the actual paper votes be counted.
Nov 7, 2020 at 21:13 comment added reirab @Ave It keeps track of the vote totals digitally, but also prints a paper receipt so that 1) the voter can see that their ballot was recorded accurately and 2) a recount can be conducted based on the paper records (either manually or with optical scanners that are independent of the EVM) to verify the digital results if an error is suspected.
Nov 7, 2020 at 16:25 comment added ave An EVM that also prints out paper is just a really expensive printer.
Nov 6, 2020 at 19:44 comment added Esa Jokinen @defalt: Thanks for giving a name for the idea. I'm glad it has already been tested in practice!
Nov 6, 2020 at 19:39 comment added defalt EVM that prints voter's receipt is already used.
Nov 6, 2020 at 19:22 history answered Esa Jokinen CC BY-SA 4.0