Which authentication method involves something the user physically possesses, like a smart card or token?
- Biometric authentication
- Two-factor authentication
- Password authentication
- Single-factor authentication
Two-factor authentication (2FA) involves something the user physically possesses (like a smart card or token) and something they know (like a PIN or password). It provides an additional layer of security beyond just a password, making it more challenging for unauthorized users to gain access.
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