two-factor authentication
noun
two-fac·tor authentication
ˈtü-ˈfak-tər- 
: a method of verifying the identity of a person (as for granting access to a system) by requiring a password and an additional form of authorization (such as a code, a fingerprint, or a smartphone app)
—abbreviation 2FA
compare multi-factor authentication
Examples of two-factor authentication in a Sentence
Recent Examples on the Web
Passwords are not secure — even with two-factor authentication (2FA).
—
Zak Doffman, Forbes.com, 20 July 2025
Additionally, users can enable two-factor authentication and manage sharing permissions to protect their files.
—Kurt Knutsson, FOXNews.com, 17 July 2025
That includes usernames, passwords, wallet keys and any two-factor authentication setups.
—Steve Hruby, The Enquirer, 15 July 2025
The Arlo app is swift to load, offers rich notifications, and supports two-factor authentication.
—Simon Hill, Wired News, 12 July 2025
See All Example Sentences for two-factor authentication
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Zak Doffman, Forbes.com, 20 July 2025
Additionally, users can enable two-factor authentication and manage sharing permissions to protect their files.
—Kurt Knutsson, FOXNews.com, 17 July 2025
That includes usernames, passwords, wallet keys and any two-factor authentication setups.
—Steve Hruby, The Enquirer, 15 July 2025
The Arlo app is swift to load, offers rich notifications, and supports two-factor authentication.
—Simon Hill, Wired News, 12 July 2025
See All Example Sentences for two-factor authentication
Cite this Entry
“Two-factor authentication.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/two-factor%20authentication. Accessed 29 Jul. 2025.
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