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WebAuthn & FIDO2 for Developers

The FIDO2/WebAuthn ceremonies behind passkeys, exposed through one API: register and verify platform authenticators (Face ID, fingerprint, Windows Hello) and roaming security keys. Available on Business Pro and Enterprise.

WebAuthn Authentication

Key Features

Simpler, stronger, and more user-friendly authentication with MojoAuth WebAuthn.

Simpler, Stronger Authentication

Replace passwords with secure, phishing-resistant public-key cryptography. Users can authenticate with biometric readers, security keys, or PINs on desktop and mobile devices.

Enhanced Security with FIDO2

WebAuthn leverages asymmetric cryptography ensuring private keys never leave the user’s device, protecting against credential database breaches.

Flexible Multi-Factor Authentication (MFA)

Combine WebAuthn with your existing authentication flow to add MFA using biometrics or hardware tokens, enhancing account security without friction.

User-Friendly and Cost-Effective

Users on WebAuthn have no password to reset - fewer support tickets and faster login across devices.

Phishing-Resistant

Authentication is bound to your domain, making it highly resistant to phishing attacks.

Cross-Device Support

Works with smartphones, laptops, tablets, and hardware security keys for broad compatibility.

How WebAuthn Works

Secure passwordless authentication - from registration to access, in three simple steps.

  1. User Registers Authenticator

    The user registers a hardware key or biometric authenticator with your application.

  2. User Authenticates

    At login, the user verifies their identity using their chosen authenticator (fingerprint, face ID, PIN, or security key).

  3. Secure Access Granted

    MojoAuth validates the cryptographic challenge, granting the user fast and secure access without passwords.

How WebAuthn Works

Simple Integration

Easily integrate MojoAuth’s WebAuthn APIs into your existing authentication systems. Our flexible platform supports standalone WebAuthn or MFA enhancement, providing seamless deployment with minimal development overhead.

  • Easy API integration for WebAuthn flows
  • Supports both passwordless and MFA scenarios
  • Works with biometric sensors and hardware keys
  • Deploy in hours, not months
View implementation guide
challenge.json
{
  "challenge": "random-server-challenge",
  "user": {
    "id": "user_id",
    "name": "user@example.com"
  },
  "authenticator": "platform or cross-platform",
  "attestation": "direct or indirect"
}

Benefits of WebAuthn

Why businesses and users choose passwordless authentication with MojoAuth WebAuthn

For Businesses


  • Drastically reduce security breaches caused by compromised passwords
  • Lower support costs - users on WebAuthn have no password to reset
  • Boost customer trust with modern, phishing-resistant authentication

For Users


  • Enjoy fast, passwordless login using familiar devices like smartphones and laptops
  • Benefit from secure biometric and hardware key authentication
  • Experience fewer login frustrations, increasing satisfaction and adoption

Looking for the product view - conversion, recovery and rollout for consumer apps? Read Passkeys for Consumer Apps.

Adopt Passwordless Authentication Today

Ship FIDO2/WebAuthn on the same API as magic links, OTP and social login.

Call +1-844-321-AUTH