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Two-factor authentication (2FA) defends against password compromise by a remote attacker. We surveyed 4,275 students, faculty, and staff at Brigham Young University to measure user sentiment about Duo 2FA one year after the university adopted it. The results were mixed. A majority of the participants felt more secure using Duo and felt it was easy to use. About half of all participants reported at least one instance of being locked out of their university account because of an inability to authenticate with Duo. We found that students and faculty generally had more negative perceptions of Duo than staff. The survey responses reveal some pain points for Duo users. In response, we offer recommendations that reduce the frequency of 2FA for users. We also suggest UI changes that draw more attention to 2FA methods that do not require WiFi, the “Remember Me” setting, and the help utility.
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A Usability Study of Five Two-Factor Authentication Methods
Two-factor authentication (2FA) defends against account compromise. An account secured with 2FA typically requires an individual to authenticate using something they know—typically a password—as well as something they have, such as a cell phone or hardware token. Many 2FA methods in widespread use today have not been subjected to adequate usability testing. Furthermore, previous 2FA usability research is difficult to compare due to widely-varying contexts across different studies. We conducted a two-week, between-subjects usability study of five common 2FA methods with 72 participants, collecting both quantitative and qualitative data. Participants logged into a simulated banking website nearly every day using 2FA and completed an assigned task. Participants generally gave high marks to the methods studied, and many expressed an interest in using 2FA to provide more security for their sensitive online accounts. We also conducted a within-subjects laboratory study with 30 participants to assess the general usability of the setup procedure for the five methods. While a few participants experienced difficulty setting up a hardware token and a one-time password, in general, users found the methods easy to set up.
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- Award ID(s):
- 1816929
- PAR ID:
- 10110669
- Date Published:
- Journal Name:
- Proceedings of the Fifteenth Symposium on Usable Privacy and Security
- Page Range / eLocation ID:
- 357-370
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Accepted Manuscript1.0
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