Why do phones need two-factor auth?
Show answer & explanation
Answer: Add extra security layer
Add extra security layer ✓ — Correct! 2FA requires two verification types: something you know (password) + something you have (phone code, security key) or are (fingerprint). Even if hackers steal your password, they can't access accounts without the second factor. Methods: SMS codes, authenticator apps (TOTP), hardware keys (YubiKey), biometrics. Protects against phishing, data breaches, and password reuse. important security!
Track user location — Wrong. 2FA verifies identity through multiple factors, not location. It ensures only you access accounts even if passwords are compromised.
Reduce password length — Wrong. 2FA doesn't replace strong passwords—it adds another verification step. You still need a good password plus a second factor.