September/October 2008
Flawless Vote Counts
Cryptography lets voters verify ballots.
By Matt Mahoney
Since the 2000 election debacle, optical scanners have become the most common U.S. voting technology. Voters fill in a bubble next to a candidate's name on a paper ballot and feed it into the scanner. The scanners tally votes automatically, saving time, but they also leave a paper trail that can be hand audited.
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Massachusetts Institute of Technology