Verified Voting Blog: Paper Ballots, Photocopiers, and Security
When I heard that New York City had found that a photocopy of a ballot could be successfully scanned by both of the two systems being used in New York State, my first thought was that this is Sun-Rises-in-the-East news. It didn’t surprise me, and the first line of defense against attacks involving any type of fake ballot, photocopied or printed, is well designed and implemented ballot management security procedures. But this is a complex issue which bears some discussion.
Before discussing the security threat, let’s look at a technical question – should a scanner be able to detect a photocopied ballot? One of the challenges posed by modern high resolution copiers and printers is that they are capable of producing all manner of difficult to detect counterfeits. This became an extremely serious problem in the 1990’s as convincing counterfeit currency became easy to produce using the off the shelf copiers. In response, the United States has been replacing currency with new bills containing anti-counterfeiting features. So it’s no surprise that a modern copier can create a ballot that can be successfully scanned.