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
The hack also underscores how two-factor authentication isn’t bulletproof.
—
Michael Kan, PCMAG, 25 Mar. 2025
Enable two-factor authentication wherever it’s offered to add an extra layer of security that helps prevent unauthorized access even if your password is compromised.
—Kurt Knutsson, Cyberguy Report, Fox News, 25 Mar. 2025
Monitor for misuse: Enable two-factor authentication and watch out for phishing scams leveraging genetic info.
—Anisha Sircar, Forbes, 25 Mar. 2025
For customers, experts recommend changing passwords regularly, enabling two-factor authentication, and monitoring financial accounts for suspicious activity in the wake of such breaches.
—Russel Honoré, Newsweek, 5 Mar. 2025
See All Example Sentences for two-factor authentication
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Michael Kan, PCMAG, 25 Mar. 2025
Enable two-factor authentication wherever it’s offered to add an extra layer of security that helps prevent unauthorized access even if your password is compromised.
—Kurt Knutsson, Cyberguy Report, Fox News, 25 Mar. 2025
Monitor for misuse: Enable two-factor authentication and watch out for phishing scams leveraging genetic info.
—Anisha Sircar, Forbes, 25 Mar. 2025
For customers, experts recommend changing passwords regularly, enabling two-factor authentication, and monitoring financial accounts for suspicious activity in the wake of such breaches.
—Russel Honoré, Newsweek, 5 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 11 Apr. 2025.
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