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 initial order came as a penalty after the FTC found that a coding error had caused then-Twitter to improperly share users’ contact information for ad targeting that had initially been submitted for two-factor authentication.
—
Ashley Belanger,
ArsTechnica,
2 July 2026
Some banks that use two-factor authentication, a text code or QR code scan at login, may not connect automatically.
—
Sharon Wu,
USA Today,
1 July 2026
Some of the more sophisticated attacks can even capture your active login session, allowing criminals to bypass two-factor authentication entirely.
—
Ken Colburn,
AZCentral.com,
29 June 2026
Priority items include setting up credit report monitoring, enabling fraud alerts, and turning on two-factor authentication for your online banking.
—
Neil J. Rubenking,
PC Magazine,
24 June 2026
See All Example Sentences for two-factor authentication
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Ashley Belanger,
ArsTechnica,
2 July 2026
Some banks that use two-factor authentication, a text code or QR code scan at login, may not connect automatically.
—
Sharon Wu,
USA Today,
1 July 2026
Some of the more sophisticated attacks can even capture your active login session, allowing criminals to bypass two-factor authentication entirely.
—
Ken Colburn,
AZCentral.com,
29 June 2026
Priority items include setting up credit report monitoring, enabling fraud alerts, and turning on two-factor authentication for your online banking.
—
Neil J. Rubenking,
PC Magazine,
24 June 2026
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 5 Jul. 2026.
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