Two-factor authentication delivers strong authentication and provides additional security step by requiring a second form of authentication. Two-factor authentication (2FA) is also known as two-steps verification or multifactor authentication. FIDO2 is based on public key cryptography and is intended to solve multiple user scenarios including strong first factor (password-less), strong second factor, and multi-factor password-less authentication. For example, the principle behind FIDO2 is to replace shared secrets, such as passwords, with public key cryptography. Passwordless authentication is any method of verifying a user’s identity without requiring the user to provide a password.
If the biometric validation fails, the user will be prompted to type a PIN. If I’m using a FIDO2 biometric key, do I need to use a PIN?Ī PIN is an alternative to verify the user before responding a registration or authentication request. If someone stole your PIN and wanted to sign into your account, they’d need your physical device too. A PIN is tied to the specific hardware device it was set up on. Remember that a PIN is just one of the two factors.
To learn more, you can read the following article “ Why a PIN is better than a password”. In contrast, a password is sent across a network to the service for validation. A PIN is stored locally on the device and is never sent across the network. The purpose of the PIN is to unlock the security key so it can perform its role. What’s the difference between a PIN and password?Ī PIN is different than a password. Since it’s used in addition to a PIN or a fingerprint, even if someone has your security key, they won’t be able to sign in without the PIN or the fingerprint that you registerd on the key. FIDO2 authenticators What is a FIDO2 security key?Ī security key is a physical device that you can use instead of your username and password to sign in. Here are answers to the most commonly asked questions about FIDO2 with Azure AD and Windows 10.
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