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Register a Security Key as an Identity Verification Method for Salesforce Orgs
Register a physical security key so you can use it to verify your identity when logging in with multi-factor authentication (MFA) or if you receive a device activation challenge. You can use security keys that support the WebAuthn (FIDO2) or Universal Second Factor (U2F) standards. The registration process sets up your security key as a personal verification by creating a connection between your Salesforce account and the key. If you don’t see this option, talk to your Salesforce admin about enabling it.

