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> The way to minimize the risk of that is to have two voting machines, with independently developed software in each. Then see if the two produce the same resul

> The way to minimize the risk of that is to have two voting machines, with independently developed software in each. Then see if the two produce the same result. How could this possibly work, without having the precise same votes entered into each machine (an impossible to guarantee prerequisite)?

WalterBright 4y ago
Start with a stack of ballots. Run the stack through one machine. Run the same stack through another machine. Check the tallies. If they differ, then the counts are discarded and the stack goes to perhaps a hand count. Each stack is handled by two people, one from each party. One feeds the machine, the other watches him.
shagie 4y ago
That particular device pictured is a scanner. https://npr.brightspotcdn.com/dims4/default/9956d4f/2147483647/strip/true/crop/5000x3333+0+0/resize/1760x1174!/format/webp/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Fad%2Fb5%2F4ec7e5b649ba9eafac8665527401%2Fps-new.jpg https://npr.brightspotcdn.com/dims4/default/9956d4f/21474836... It can scan a scantron sheet in which the page, side, column and row are used to generate a number. For example a bubble filled in on page 1, side 1, column 4, row 8 would generate 110408. There is some business logic here that says that "For page 1, side 1, only one of 0408, 0409, 0410 may be entered". At the end, however, you get a number counted that is then tallied for and then that is mapped back to Bob Smith for the votes. Note the alignment guides on the sides - https://www.amazon.com/Official-SCANTRON-Brand-Answer-Sheet/dp/B09X3L593T/ https://www.amazon.com/Official-SCANTRON-Brand-Answer-Sheet/... If the scanner detects a barcode page being entered (that was generated by a touch screen system), then one of the barcodes encodes the number 110408, and the barcode is read rather than trying to go from the scantron page guides. --- In the case, you've got the scanner here, you enter them into the scanner and get the vote counts "live". Then, you take them out of the secured spot and scan them all in to the other machine and compare the vote tallies. There is a paper ballot that is recording this. In the event that there is a recount, then the paper ballot is examined and the name next to the bubble is what the human auditor uses to count votes.

WalterBright 4y ago

Start with a stack of ballots. Run the stack through one machine. Run the same stack through another machine. Check the tallies. If they differ, then the counts are discarded and the stack goes to perhaps a hand count. Each stack is handled by two people, one from each party. One feeds the machine, the other watches him.

shagie 4y ago

That particular device pictured is a scanner. https://npr.brightspotcdn.com/dims4/default/9956d4f/2147483647/strip/true/crop/5000x3333+0+0/resize/1760x1174!/format/webp/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Fad%2Fb5%2F4ec7e5b649ba9eafac8665527401%2Fps-new.jpg https://npr.brightspotcdn.com/dims4/default/9956d4f/21474836... It can scan a scantron sheet in which the page, side, column and row are used to generate a number. For example a bubble filled in on page 1, side 1, column 4, row 8 would generate 110408. There is some business logic here that says that "For page 1, side 1, only one of 0408, 0409, 0410 may be entered". At the end, however, you get a number counted that is then tallied for and then that is mapped back to Bob Smith for the votes. Note the alignment guides on the sides - https://www.amazon.com/Official-SCANTRON-Brand-Answer-Sheet/dp/B09X3L593T/ https://www.amazon.com/Official-SCANTRON-Brand-Answer-Sheet/... If the scanner detects a barcode page being entered (that was generated by a touch screen system), then one of the barcodes encodes the number 110408, and the barcode is read rather than trying to go from the scantron page guides. --- In the case, you've got the scanner here, you enter them into the scanner and get the vote counts "live". Then, you take them out of the secured spot and scan them all in to the other machine and compare the vote tallies. There is a paper ballot that is recording this. In the event that there is a recount, then the paper ballot is examined and the name next to the bubble is what the human auditor uses to count votes.