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
Enable two-factor authentication: Enable two-factor authentication (2FA) whenever possible.
—
Kurt Knutsson, FOXNews.com, 1 June 2025
The other advice is to remove password only access to your accounts and only to use two-factor authentication that links to your physical devices.
—Zak Doffman, Forbes.com, 1 June 2025
Prioritize Cybersecurity Education Firms should educate clients on cybersecurity through live training and videos on security features, such as fraud alerts and two-factor authentication.
—Expert Panel®, Forbes.com, 22 May 2025
Set up two-factor authentication for all your online accounts.
—Jibin Joseph, PC Magazine, 19 May 2025
See All Example Sentences for two-factor authentication
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Kurt Knutsson, FOXNews.com, 1 June 2025
The other advice is to remove password only access to your accounts and only to use two-factor authentication that links to your physical devices.
—Zak Doffman, Forbes.com, 1 June 2025
Prioritize Cybersecurity Education Firms should educate clients on cybersecurity through live training and videos on security features, such as fraud alerts and two-factor authentication.
—Expert Panel®, Forbes.com, 22 May 2025
Set up two-factor authentication for all your online accounts.
—Jibin Joseph, PC Magazine, 19 May 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 7 Jun. 2025.
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