2FA

Second login step

2FA stands for two-factor authentication, a security method requiring two separate forms of identification to access an account.

Typically this means something you know (a password) plus something you have (a code sent to your phone) or something you are (a fingerprint).

Enable 2FA on your banking app.

The extra step makes accounts harder to compromise even if passwords are stolen.

methods

SMS

Mobile text protocol

push notification · backup codes · security key · passkey

security

identity verification

Confirming someone's claimed self

challenges

recovery process

Structured path to healing

implementation

enrollment

Act of registering officially

trusted device · grace period · opt-in · migration · re-enrollment

systems

MFA

Graduate arts credential

  • single sign-onOne credential, multiple applications
  • SSOUnified authentication system
  • OAuthToken-based authorization standard

zero trust · passwordless · identity management

Categories
Opposites
authentication strength

2FAopen access

Free public scholarly content

passwordless · MFA · multi-factor authentication

security posture

2FAguest access

Temporary entry for outsiders

open access · unsecured · unprotected · open door policy · public access

Family

factor, factors, factoring, factored, factorial

Familiarity
Top 500,000
Profile
Used worldwide · Rated G