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Home » Usability of Voter Verifiable, End-to-end Voting Systems: Baseline Data for Helios, Prêt à Voter, and Scantegrity II
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Usability of Voter Verifiable, End-to-end Voting Systems: Baseline Data for Helios, Prêt à Voter, and Scantegrity II

Wednesday, July 23, 2014 - 3:45pm
Authors: 

 Claudia Z. Acemyan, Philip Kortum, Michael D. Byrne, and Dan S. Wallach, Rice University

Abstract: 

In response to voting security concerns, security researchers have developed tamper-resistant, voter verifiable voting methods. These end-to-end voting systems are unique because they give voters the option to both verify the system is working properly and to check that their votes have been recorded after leaving the polling place. While these methods solve many of the security problems surrounding voting with traditional methods, the systems’ added complexity might adversely impact their usability. This paper presents an experiment assessing the usability of Helios, Prêt à Voter, and Scantegrity II. Overall, the tested systems were exceptionally difficult to use. Data revealed that success rates of voters casting ballots on these systems were extraordinarily low. Specifically, only 58% of ballots were successfully cast across all three systems. There were reliable differences in voting completion times across the three methods, and these times were much slower than previously tested voting technologies. Subjective usability ratings differed across the systems, with satisfaction being generally low, but highest for Helios. Vote verification completion rates were even lower than those for vote casting. There were no reliable differences in ballot verification times across the three methods, but there were differences in satisfaction levels, with satisfaction being lowest for Helios. These usability findings—especially the extremely low vote casting completion rates—highlight that it is not enough for a system to be secure; every system must also be usable. 

Claudia Z. Acemyan, Rice University

Philip Kortum, Rice University

Michael D. Byrne, Rice University

Dan S. Wallach, Rice University

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BibTeX
@inproceedings {185517,
author = {Claudia Z. Acemyan and Philip Kortum and Michael D. Byrne and Dan S. Wallach},
title = {Usability of Voter Verifiable, End-to-end Voting Systems: Baseline Data for Helios, Pr{\^e}t {\`a} Voter, and Scantegrity {II}},
booktitle = {2014 Electronic Voting Technology Workshop/Workshop on Trustworthy Elections (EVT/WOTE 14)},
year = {2014},
address = {San Diego, CA},
url = {https://www.usenix.org/conference/evtwote14/workshop-program/presentation/acemyan},
publisher = {{USENIX} Association},
month = aug,
}
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