Deploying passkeys can be challenging with all the vendor documentation and FIDO2 specs. This checklist provides clear steps to ensure a smooth rollout before, during, and after deployment.
This guide focuses on enterprise passkey deployment for workforce authentication, assuming you're replacing or enhancing password-based systems with FIDO2 credentials. If you're implementing consumer-facing passkeys, the steps will differ.
Prerequisites
Before starting, ensure these essentials are ready:
Identity provider supports FIDO2. Your IdP must handle WebAuthn registration and assertion flows. If you're using a legacy SAML-only system, upgrade or federate to a modern provider.
Device management visibility. Maintain an inventory of endpoint types (Windows, macOS, iOS, Android) and OS versions. Passkey support varies by platform, so you need to know what you're working with.
Fallback strategy approved. Aim for a zero-password environment, but have a recovery plan for legacy apps and third-party integrations that don't support FIDO2 yet.
Checklist Items
1. Verify FIDO2 Authenticator Support Across Your Fleet
Done when: You've tested passkey registration and authentication on devices from each OS family in use.
Test both synced passkeys (iCloud Keychain, Google Password Manager, Windows Hello) and device-bound passkeys if using Multi-Factor Cryptographic Devices. Remember, iOS and Android handle passkey UX differently, and Windows Hello has specific Group Policy needs.
Good looks like: A matrix showing successful registration and sign-in for each platform, with documented failures (e.g., "Android 11 devices can't sync passkeys; upgrade required").
2. Disable Front-Channel Password Transmission
Done when: Your authentication flows no longer send passwords over the network, even as a fallback.
If using a hybrid model, ensure password and passkey flows are separate. Don't let a misconfigured client downgrade a passkey-enabled account to password auth without explicit approval.
Good looks like: Network traces showing only WebAuthn challenge-response exchanges; no POST bodies with plaintext or Password Hashing.
3. Configure Phishing-Resistant MFA Policy
Done when: Your Conditional Access policy requires FIDO2 credentials for privileged accounts and sensitive resources.
Passkeys eliminate the risk of stolen credentials, but only if enforced. Set policy at the identity layer, not the application layer.
Good looks like: Policy rules that reject authentication attempts using passwords or One-Time Passwords for admin roles; only FIDO2 assertions pass.
4. Establish Passkey Lifecycle Governance
Done when: You have documented procedures for passkey registration, revocation, and recovery integrated with your Joiner-Mover-Leaver workflows.
Revoke passkeys the same way you revoke certificates or disable accounts. Avoid creating a shadow credential store.
Good looks like: Automated deprovisioning that removes passkeys when an account is disabled; manual override process for emergency revocation.
5. Validate Relying Party Identifier Scope
Done when: Your WebAuthn Relying Party ID is scoped correctly to prevent credential phishing across subdomains.
The Relying Party ID determines which origins can request assertions. Set it correctly to avoid security risks.
Good looks like: Relying Party ID matches your SSO domain; test confirms that passkeys registered under that ID work across all federated apps but reject requests from out-of-scope origins.
6. Test Backup and Recovery Flows
Done when: You've simulated device loss, passkey corruption, and account lockout scenarios with real users.
Recovery should be quick and user-friendly. Avoid relying on help desks for recovery.
Good looks like: Users can self-recover using a secondary passkey, a device-bound backup credential, or a time-limited recovery code; average recovery time under 5 minutes.
7. Migrate Legacy MFA Enrollments
Done when: Accounts previously enrolled in SMS-based or Time-Based One-Time Password MFA have been re-enrolled with passkeys, and old methods are deprecated.
Avoid dual-enrolled accounts to prevent confusion and security risks.
Good looks like: Enrollment dashboard shows zero active SMS or TOTP registrations for roles that require phishing-resistant authentication; deprecated methods are hidden from user-facing enrollment UIs.
8. Audit Session Broker Compatibility
Done when: Your privileged access management tools and session brokers can consume FIDO2 assertions for session initiation.
Ensure your Session Broker can handle FIDO2 assertions to avoid access issues.
Good looks like: Successful end-to-end flow: user authenticates with passkey → IdP issues token → Session Broker validates token and grants access to target system.
9. Disable Password Reset Self-Service for Passkey-Only Accounts
Done when: Accounts using passkeys no longer expose password reset links or security question flows.
Leaving reset mechanisms active creates vulnerabilities.
Good looks like: Password reset UI returns "This account uses passkeys" and redirects to passkey recovery flow; no option to set a new password.
10. Measure Help Desk Ticket Volume
Done when: You have a baseline of authentication-related tickets pre-passkey and a tracking mechanism to measure change post-deployment.
Track ticket volume to gauge the impact of passkey deployment.
Good looks like: Tagged ticket categories for "password reset," "account lockout," and "MFA enrollment"; weekly trend reports showing volume and resolution time.
Common Mistakes
Treating passkeys as a second factor. Passkeys replace passwords, not supplement them. Avoid asking for both.
Ignoring device-bound passkeys for high-assurance scenarios. Use device-bound passkeys when hardware-backed attestation is needed.
Skipping user communication. Educate users about passkeys to prevent resistance and workarounds. Provide clear guidance.
Failing to test Federation Metadata propagation. Ensure passkey-authenticated sessions carry the correct Authentication Method Reference claims when federating with external partners.
Next Steps
Once you've completed these steps, expand beyond pilot users. Start with low-risk populations, measure adoption and support load, then extend to higher-risk roles.
Track two metrics: passkey enrollment rate and authentication success rate. If you're not seeing improvements, adjust your UX or policy.
Finally, plan your password deprecation timeline. Set a date to disable password authentication for all accounts with passkeys. Running two systems increases risk, so aim for a complete transition.
