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What is Punchscan?

Punchscan is the first vote capture system to offer fully end-to-end (E2E) verifiability of election results. Punchscan moves beyond ordinary paper audit trails offering a far more robust and available way for voters to become involved in the election oversight process.

Election Day at the University of Ottawa
Punchscan runs the GSAED Election [More Details]

Punchscan Voting in a Nutshell

  • Voter experience: casting and checking your vote in a Punchscan election is easy! [View]
  • Punchscan on a sheet: see the Punchscan election process summarized on a single printable sheet of paper. [PDF] [PNG]

What is E2E, and why is it Important?

End-to-end cryptographic independent verification, or E2E, is a mechanism built into an election that allows voters to take a piece of the ballot home with them as a receipt. This receipt does not allow voters to prove to others how they voted, but it does permit them to:

  • Verify that they have properly indicated their votes to election officials (cast-as-intended).
  • Verify with extremely high assurance that all votes were counted properly (counted-as-cast).

Voters can check that their vote actually made it to the tally, and that the election was conducted fairly.

Punchscan is an international open-source project headed by esteemed cryptographer David Chaum and includes researchers from the University of Maryland-Baltimore County (UMBC), George Washington University (GWU), University of Ottawa (UO) and University of Waterloo (UW).