Moving to Passwordless MFA: Real-World FIDO Examples

Date: 2026-08-25
Author: Versasec

What is FIDO Authentication?

Before diving into examples, it’s important to understand the foundation. FIDO (Fast IDentity Online) is a set of open standards defined by the FIDO Alliance.

Instead of relying on shared secrets (like a password stored on a server), FIDO uses public key cryptography. When a user registers a device, a cryptographic key pair is created. The public key is shared with the online service, but the private key never leaves the user’s device.

When logging in, the service sends a domain-bound challenge. The user’s device signs this challenge using the private key, which the service then verifies with the public key. Because the private key is never transmitted and the challenge is bound to the specific website’s domain, FIDO authentication is inherently phishing-resistant.

Real-World FIDO Authentication Examples

Understanding the technology is one thing, but seeing how it fits into daily operations is where the value of passwordless MFA truly shines. Here are two common examples of multi-factor authentication using FIDO in the enterprise, focusing on the high-assurance security of device-bound credentials.

Example: The Secure Endpoint User (Hardware-Bound Passkeys)

Imagine an enterprise where security is paramount, and the IT department needs to ensure that credentials cannot be intercepted, copied, or synced across unmanaged devices.

For these users, hardware-bound passkeys (also known as device-bound passkeys) offer an exceptional combination of security and seamless access. Unlike synced passkeys (which can be backed up to consumer cloud services), a hardware-bound passkey is permanently tied to the secure enclave of the specific device it was created on. It cannot be extracted or copied.

The Workflow:

1. Registration: Sarah, a financial analyst, receives a new corporate laptop and a FIDO2 device in form of a smart card or usb-token. During onboarding, she is prompted to register a passkey and set a PIN and if available scans fingerprints.
2. Daily Access: The next morning, Sarah needs to access the corporate ERP system. Instead of typing a password and waiting for a push notification, she inserts her device and enter the PIN or scans a finger. The device’s secure hardware signs the challenge behind the scenes, and she is granted immediate access.
3. High-Assurance Security: Because the passkey is hardware-bound, IT knows with absolute certainty that the authentication occurred on the specific, managed corporate device they issued to Sarah.

In this FIDO authentication example, the security is bound to a physical object Sarah possesses. Even if a threat actor somehow compromised Sarah’s laptop, they could not access the database without physically possessing her hardware token.

Taking Control: The Power of On-Premise FIDO Infrastructure

While many organizations leverage cloud-based Identity Providers (IdPs) for FIDO authentication, high-security environments, such as government agencies, defense contractors, and critical infrastructure providers, often have strict data residency and sovereignty requirements. For these organizations, sending authentication data to a public cloud service, even a secure one, may be a non-starter.

This is where deploying a dedicated, on-premise FIDO server becomes a strategic necessity.

Versasec now offers a powerful FIDO2 on-premise authentication server, designed specifically for organizations that require absolute control over their credential management and authentication infrastructure.

Integrating an on-premise server into your plan offers several key advantages:

• Data Sovereignty: Authentication logs, user identities, and public key data remain entirely within your corporate network and physical control, ensuring compliance with strict data localization laws.
• Air-Gapped Security: For environments that operate without internet connectivity (air-gapped networks), an on-premise FIDO server is the only way to enable FIDO2, phishing-resistant passwordless MFA.
• Custom Integration: On-premise deployments often allow for tighter integration with legacy on-premise applications, active directories, and custom-built internal tools that may not easily connect to cloud IdPs.

By pairing hardware-bound passkeys and hardware security tokens with an on-premise FIDO server, enterprises achieve the pinnacle of zero-trust security: un-phishable credentials managed entirely within their own fortified perimeter.

Best Practices for Passwordless Implementation

Transitioning to passwordless MFA is not a one-size-fits-all project. To ensure a successful rollout, consider these best practices:

• Infrastructure Requirements: Evaluate whether a cloud-based IdP meets your security needs, or if a dedicated on-premise FIDO server is required for compliance and data control.
• Account Recovery: Since hardware-bound credentials cannot be synced, you must establish a secure, well-defined process for identity verification and credential re-issuance that avoids weak fallback methods like email links.
• Credential Lifecycle Management: A FIDO2 device’s lifecycle extends beyond initial issuance. You must plan for ongoing maintenance, including handling blocked PINs, revocations, and re-issuance.
• Device Management: Look beyond the passkey. Depending on the hardware’s capabilities, ensure you account for configurations such as PIN policies, certificate management, and physical access encoding.
• Auditability: Define a strategy for tracking and verifying device management events to ensure accountability.
• Scalability: Implement role-based administration and self-service capabilities to distribute management effectively while adhering to company policies.

Take the Next Step Toward Passwordless Security

The benefits of moving to passwordless MFA are clear: enhanced phishing resistance, a frictionless user experience, and a significant reduction in credential-related support costs.
Stop relying on shared secrets and start building a true Zero Trust foundation with FIDO authentication.

Ready to see how it works in your environment?

Contact our team today to find out more about passwordless MFA solutions, including our new on-premise FIDO server.