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 as a matter of course, or use a Passkey which will serve as both a secure login method and as a second authentication factor.
—
Davey Winder, Forbes, 10 Mar. 2025
Common security methods include updating passwords, two-factor authentication, and avoiding clicking suspicious links.
—Tommy Tuberville, Newsweek, 7 Mar. 2025
The report also revealed the top ways those surveyed secure their banking accounts, which include using two-factor authentication, monitoring accounts for suspicious activity and avoiding public Wi-Fi for banking.
—Arthur Zaczkiewicz, WWD, 7 Mar. 2025
If in doubt, check out my detailed guide on how to keep your device and software updated.
2) Enable two-factor authentication (2FA): Even if your credentials are stolen, 2FA adds an extra layer of security by requiring a secondary verification method, such as a one-time code sent to your phone.
—Kurt Knutsson, Cyberguy Report, Fox News, 3 Mar. 2025
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Davey Winder, Forbes, 10 Mar. 2025
Common security methods include updating passwords, two-factor authentication, and avoiding clicking suspicious links.
—Tommy Tuberville, Newsweek, 7 Mar. 2025
The report also revealed the top ways those surveyed secure their banking accounts, which include using two-factor authentication, monitoring accounts for suspicious activity and avoiding public Wi-Fi for banking.
—Arthur Zaczkiewicz, WWD, 7 Mar. 2025
If in doubt, check out my detailed guide on how to keep your device and software updated.
2) Enable two-factor authentication (2FA): Even if your credentials are stolen, 2FA adds an extra layer of security by requiring a secondary verification method, such as a one-time code sent to your phone.
—Kurt Knutsson, Cyberguy Report, Fox News, 3 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 21 Mar. 2025.
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