Abstract

Passwords as the primary form of authentication on the web have many issues, such as password re-use across sites and difficulty in remembering secure passwords. The FIDO Alliance has created a passwordless system that has with support from companies like Google, Apple, and Microsoft: FIDO2. Studies have shown so far that users find FIDO2 usable on personal computers, but no work has been published on its usability on mobile devices. I conducted a lab study in which participants used FIDO2 passwordless authentication with hardware tokens on a mobile phone. Participants found FIDO2 usable on mobile devices, but had similar fears as participants in prior studies, primarily revolving around account loss. I also found that showing participants an instructional video after they had used FIDO2 on a mobile device increased perceived usefulness and likelihood of adoption, though usability scores remained about the same.

Degree

College and Department

Physical and Mathematical Sciences; Computer Science

Rights

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