Guides

What is passkey immediate mediation?

Immediate mediation lets a web passkey button skip the QR dead end, showing a prompt only when a passkey is actually on the device. Here's how it works.

How to mitigate SMS pumping without breaking signup

SMS pumping can quietly inflate OTP costs. Learn how it works and how to reduce exposure with smarter routing, passkeys, rate limits, and provider controls.

7 Multi-Factor Authentication Solutions: Pros & Cons | Authsignal Guide

Compare 7 multi-factor authentication solutions with honest pros, cons, and use cases. Find the right fit for your stack, including orchestration options like Authsignal.

How to add adaptive MFA and passkeys to any web app with Authsignal and Lambda@Edge

Use AWS Lambda@Edge and Authsignal to intercept logins at the CloudFront layer and enforce risk-based MFA, without touching your origin app or writing a single backend route.

How to implement conditional UI for passkeys

Learn how conditional UI enhances passkey login by integrating passkeys into the browser’s native autofill. This guide explains how it works, why it matters, and how to implement it in your Authsignal authentication flow.

Step-up authentication with Duende IdentityServer and Authsignal

Add adaptive step-up authentication to Duende IdentityServer using Authsignal. Learn how to trigger MFA only for high-risk actions, improve security, and maintain a seamless user experience with practical code examples.

Secure your ServiceNow workflows with Authsignal Call Connect

Secure your ServiceNow workflows with Authsignal Call Connect. Verify callers in seconds using passkeys, OTP, biometrics, and multi-channel authentication.

Building adaptive authentication with Amazon Cognito and Authsignal

Learn how to extend Amazon Cognito with Authsignal to enable adaptive and continuous authentication. Discover how to add flexible MFA methods, apply no-code risk-based rules, and protect high-value user actions without redeploying code.

How to migrate from Passage to Authsignal

Passage by 1Password is shutting down on January 16, 2026. This guide explains how to migrate your users from Passage to Authsignal without any disruption, including data mapping, passkey credential import, and migration of verified email and phone authenticators.

How Authsignal’s passkey uplift flow solves the password problem

Passwords are broken, but passkeys offer a secure, phishing-resistant future. See how Authsignal's passkey uplift flow helps apps drive adoption, reduce friction, and guide users toward a passwordless experience.

How to implement adaptive MFA with passkeys for smarter, risk-based authentication

Learn how to build a secure, seamless money transfer experience with passkeys for adaptive MFA. Discover how Authsignal intelligently applies passkey authentication based on real-time risk, like anonymous IPs, high-value transfers, and unusual behavior.

How to add passkey step-up auth in your app?

Learn how to implement passkey-based step-up authentication in your app to secure high-value transactions. Replace SMS and passwords with fast, phishing-resistant biometrics for a seamless user experience.

Action & rules: The complete implementation guide

Learn how to implement Authsignal's actions and no-code rules into your app with this complete guide. Includes real code examples, best practices, and advanced tips for risk-based authentication.

Action & Rules: Mastering Authsignal's Rules Engine

Learn how Authsignal's Rules Engine enables risk-based authentication with no-code rule creation, powerful conditions, and impact analysis. Discover how to build, test, and optimize rules for better security and user experience.

What is a passkey, and how do passkeys work?

Explore why passkeys are replacing passwords for good. Learn how passkeys work, why they’re more secure, and how to implement them easily using Authsignal and FIDO2/WebAuthn standards.

Action & Rules: Understanding Authsignal Actions

Learn how to use Authsignal Actions to build smarter, risk-based authentication flows. Discover how actions capture user context and work with rules to enhance security without compromising UX.

How To Add Push Authentication In Your React Native App With Authsignal

Learn how to implement push authentication in your React Native app using Authsignal. Replace passwords with secure one-tap verification for simpler, stronger user authentication.

Implementing Passkeys In React Native: Why Expo Go Falls Short And How To Fix It

Learn how to implement passkeys in your React Native app using Authsignal and why Expo Go isn’t enough. Discover workarounds, such as dev builds and config plugins, that enable secure, native passkey authentication while staying within the Expo ecosystem.

How to Add Passkeys to Duende IdentityServer with Authsignal

Learn how to enhance your Duende IdentityServer setup with passkey authentication using Authsignal. Follow this step-by-step guide to enable secure, passwordless logins with biometric verification.

Supercharge Passwordless Authentication with AWS Cognito, Authsignal's Web SDK, and React

In this guide, we'll explore how you can pair Cognito with Authsignal's MFA capabilities using the AWS SDK, Authsignal Web SDK, and React. This combination gives you the complete freedom to build your own custom UI while maintaining all the security standards.

How to add MFA to Duende IdentityServer with Authsignal

Learn how to implement multi-factor authentication (MFA) in your Duende IdentityServer using Authsignal. Secure your ASP.NET Core login flow with step-by-step instructions, complete code examples, and GitHub resources.

Amazon Cognito Introduces Passwordless Authentication – but its built-in flows come with limitations

AWS Cognito’s passwordless authentication is a great step toward modern authentication, enhancing both security and user experience. Authsignal makes it exceptional by adding flexibility, advanced security features, and deeper user insights.

UX Best Practices for Passkeys: Understanding Device-Initiated Authentication

Passkeys differ from traditional username-based methods for passwordless sign-in and MFA. This article will guide you on how to create the most effective passkey experience for your users, focusing on web browsers as the platform.

Add MFA to Keycloak using Authsignal: A Step-by-Step Guide

Authsignal offers an easy-to-integrate solution that simplifies the process of adding MFA to Keycloak.

Passwordless React UI Components: Add Passkeys to Your Client-Side App

Add authentication flows into your react app or website using Authsignal’s UI components with the React SDK. Fast-track passkeys and MFA implementation for your client-side app.

How to Build a Secure Authentication Chain: Avoid Passkey Pitfalls and Enhance User Experience.

Learn how to build a secure authentication chain and avoid common passkey pitfalls. Discover key strategies to enhance security and user experience with passkeys and protect every stage of the authentication process.

How to enable self serve user authenticator management with Authsignal.

Follow our step-by-step guide on how to add a button that allows users to manage their authenticators directly from your e-commerce platform.

How to implement passkeys for a seamless E-commerce checkout experience.

In this guide, we’ll walk through how to use Authsignal’s email OTP authenticator and passkeys to create a seamless user experience for your e-commerce platform.

Integrate Authsignal with Azure AD B2C Authentication for MFA, Passwordless, and Passkeys.

Enhance Azure AD B2C with Authsignal. Integrate MFA, passwordless login, and passkeys for improved security and user experience. Follow our guides for seamless integration and take control of your authentication journey.

How to integrate AWS Cognito with Authsignal to implement passkeys in a web app.

This blog post will step through how to expand on the previous example by adding support for passkeys. Passkeys are a secure, unphishable authentication factor and offer a seamless and user-friendly experience.

How to integrate AWS Cognito with Authsignal to implement passkeys in a native mobile app.

This post covers adding passkey sign-in to a React Native app using the Authsignal SDK. The steps also apply to apps built with our iOS, Android, or Flutter SDKs.

How to integrate AWS Cognito with Authsignal to rapidly implement passwordless login and MFA.

How to implement passwordless login and MFA by pairing AWS Cognito with Authsignal. This step-by-step guide covers custom authentication flows, code examples, and leveraging Authsignal's pre-built UI for email OTP, magic links, and more.

How to meet PSD2 Strong Customer Authentication (SCA) dynamic linking requirements with Authsignal.

A step-by-step guide on introducing authentication challenges for merchants and payment service providers to ensure compliance with PSD2's Strong Customer Authentication (SCA) dynamic linking requirements.

Adaptive MFA for Auth0: Customize MFA UX to reduce consumer friction without upgrading your plan.

In this blog post, we will dive deeper into how you can fine-tune the MFA user experience with only some minor tweaks to your integration code.

Understanding Relying Parties for Passkeys: A Guide on what, why, and how to use them.

Relying parties (RPs) are crucial to ensuring passkeys are phishing-resistant. In more detail, we explain what relying parties are and how to configure them.

Unlock Passwordless for AWS Cognito.

Authsignal's flexible integration model allows you to easily switch from using AWS Cognito's hosted UI to using Lambda triggers inorder to implement Passwordless.

Java Passkeys back-end SDK

‍Authsignal's Java SDK allows engineers to implement passkeys server side calls in Java/JVM server environments.

Flutter Passkeys SDK

Adding Passkeys support to your Flutter mobile app is now made extremely easy using Authsignal's latest Flutter Passkeys SDK release.

Enable MFA for Auth0 with Authsignal in 5 Easy Steps - Authsignal

Discover how to set up MFA for Auth0 using Authsignal. Add passkeys and risk-based MFA with simple steps to improve security and user experience.