Two-factor authentication (2FA) is a security method that requires you to provide two different types of verification to log in — making it much harder for anyone else to access your account.
In Simple Terms:
It’s like needing two keys to get in instead of one:
- Something you know — like your password.
- Something you have — like your phone, a code, or a fingerprint.
Common Examples of 2FA:
- Enter your password, then:
- Get a code via text message or email.
- Use an authenticator app (like Google Authenticator).
- Approve the login with your fingerprint or face.
Why It Matters:
- Stronger protection — even if someone steals your password, they can’t log in without the second step.
- Stops hackers from accessing your accounts, even with stolen credentials.
Real-World Analogy:
Think of logging in like opening a safe:
- The password is the first lock.
- The 2FA code is the second lock.
- Both are needed to get in.