two-factor authentication


two-fac·​tor authentication ˈtü-ˈfak-tər- How to pronounce two-factor authentication (audio)
: 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 Secure your devices and accounts: Use strong, unique passwords for all your online accounts and enable two-factor authentication whenever possible. Kurt Knutsson, Cyberguy Report, Fox News, 8 June 2024 The tips include picking a strong password and not sharing it across platforms, keeping an eye out for malicious software, and using two-factor authentication on Facebook and Instagram accounts. Tamia Fowlkes, Journal Sentinel, 6 June 2024 Enlarge Getty Images Everyone with a Roku TV or streaming device will eventually be forced to enable two-factor authentication after the company disclosed two separate incidents in which roughly 600,000 customers had their accounts accessed through credential stuffing. Kevin Purdy, Ars Technica, 19 Apr. 2024 The social media site owned by Elon Musk said the SEC had not enabled two-factor authentication, and a preliminary investigation indicated the hacker didn't breach X's systems. Harold Maass, theweek, 10 Jan. 2024 Finally, Berlin should take the unglamorous but necessary steps of changing German’s online behavior by pushing the use of two-factor authentication, virtual private networks, and encrypted communications. Tyson Barker, Foreign Affairs, 15 Dec. 2016 The experts said that customers can protect themselves from these types of online attacks by frequently changing their passwords, using two-factor authentication if available and keeping financial information private from any online solicitors. Luke Barr, ABC News, 1 June 2024 Changing passwords, two-factor authentication, and the various monitoring services available can help. T. Nelson Thompson, Baltimore Sun, 23 Mar. 2024 Google is streamlining the process of setting up two-factor authentication (2FA). Emma Roth, The Verge, 6 May 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'two-factor authentication.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1990, in the meaning defined above

Time Traveler
The first known use of two-factor authentication was in 1990

Dictionary Entries Near two-factor authentication

Cite this Entry

“Two-factor authentication.” Dictionary, Merriam-Webster, Accessed 24 Jun. 2024.

Last Updated: - Updated example sentences
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