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
For example, if employees skip two-factor authentication (2FA), then the company's attack surface is extremely exposed.
—
Galit Lubetzky, Forbes.com, 14 Apr. 2025
That’s where two-factor authentication (2FA) comes in.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 13 Apr. 2025
Enable two-factor authentication: Turn on two-factor authentication for your Apple ID to add an extra layer of security to your account.
2.
—Kurt Knutsson, Cyberguy Report, Fox News, 14 Mar. 2025
The hack also underscores how two-factor authentication isn’t bulletproof.
—Michael Kan, PCMAG, 25 Mar. 2025
See All Example Sentences for two-factor authentication
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Galit Lubetzky, Forbes.com, 14 Apr. 2025
That’s where two-factor authentication (2FA) comes in.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 13 Apr. 2025
Enable two-factor authentication: Turn on two-factor authentication for your Apple ID to add an extra layer of security to your account.
2.
—Kurt Knutsson, Cyberguy Report, Fox News, 14 Mar. 2025
The hack also underscores how two-factor authentication isn’t bulletproof.
—Michael Kan, PCMAG, 25 Mar. 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 19 Apr. 2025.
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