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An authentication system in which a user must provide two types of identification, such as a bank card and pin, is called Two-factor authentication.
Two-factor authentication (2FA) is a security system that requires two distinct forms of identification in order to access something.
Two-factor authentication can be used to strengthen the security of an online account, a smartphone, or even a door. 2FA does this by requiring two types of information from the user—a password or personal identification number (PIN), a code sent to the user's smartphone, or a fingerprint—before whatever is being secured can be accessed.
- Two-factor authentication (2FA) is a security system that requires two separate, distinct forms of identification in order to access something.
- The first factor is a password and the second commonly includes a text with a code sent to your smartphone, or biometrics using your fingerprint, face, or retina.
- While 2FA does improve security, it is not foolproof.
Two-factor authentication is designed to prevent unauthorized users from gaining access to an account with nothing more than a stolen password. Users may be at greater risk of compromised passwords than they realize, particularly if they use the same password on more than one website. Downloading software and clicking on links in emails can also expose an individual to password theft.
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