Auth0 vs %%Authsignal%%
More control over authentication %%across every customer touchpoint%%
Authsignal and Auth0 both support customer authentication, but they are built with different priorities.
Authsignal is the drop-in authentication API for every customer touchpoint. It gives teams a dedicated layer for passkeys, adaptive MFA, risk-based step-up, no-code policy and omnichannel verification, without requiring them to rebuild their wider identity stack.
Auth0 takes a broader customer identity approach, combining authentication with capabilities such as user management, Universal Login, enterprise connections and authorization.
Authsignal is built for teams that want to shape when, where and how authentication happens across the customer journey. You also don't have to pick one. Authsignal integrates with Auth0, so teams already running Auth0 can add passkeys, adaptive MFA and no-code policy on top of it.
Auth0 provides a broader customer identity platform, with capabilities spanning authentication, user management, Universal Login, SSO, MFA, passwordless authentication and extensibility.
Authsignal is more specialized. It gives teams a dedicated authentication layer for controlling when customers are challenged, which methods are used and how authentication changes based on risk, context and the action being taken.
For organizations focused on modernizing the authentication experience without rebuilding their wider identity stack, Authsignal provides more control over authentication across the customer journey and every customer touchpoint.
%%1.%% Upgrade authentication without rebuilding your identity stack
Authsignal is designed to drop into the architecture you already run.
Its APIs, SDKs and pre-built UI connect to an existing user model, allowing teams to introduce passkeys, adaptive MFA and step-up authentication without making a wider identity migration the starting point. Authsignal supports existing platforms including Amazon Cognito, Azure AD B2C, Keycloak, WSO2, custom identity infrastructure and Auth0. Click here to learn more about the integration
Auth0 can also connect to an external user store, but its customer identity model can place more of the authentication and user infrastructure inside Auth0. Its documentation describes both an Auth0-hosted user store and custom database connections, including migration options for moving users into Auth0.
With Authsignal, the authentication layer can evolve while the wider identity stack stays in place.
%%2.%% Control authentication policy without coding every change
Authsignal gives product, fraud, security and compliance teams a visual no-code rules engine for controlling authentication policy, without hard-coding those decisions into every customer-facing application.
Rules can evaluate device, network, location, transaction and business context to determine whether to allow, challenge, review or block an action. Once Authsignal is integrated, teams can adjust those policies as risks, customer journeys and business requirements change without making every update another engineering project.
Auth0 also provides configurable MFA policies, while more customized authentication behavior can be built using Auth0 Actions, which allow developers to add code to authentication flows.
With Authsignal, the teams that own fraud and compliance policy can change it themselves after the initial integration. Getting to that point is quick too: Trade Me deployed in under six weeks.
%%3.%% Apply adaptive authentication across the customer journey
Risk changes throughout the customer journey, and login is only one point in it.
Authsignal's adaptive authentication model is built around the action a customer is taking. Teams can apply step-up authentication at sign-in, payments, account recovery and other sensitive transactions, then use risk and context to decide whether an additional challenge is actually required.
Auth0 supports Adaptive MFA for login transactions, using risk signals to determine when additional verification should be triggered. However, Auth0's current documentation states that Adaptive MFA requires an Enterprise plan with the Adaptive MFA add-on.
Authsignal carries that decisioning further into the customer journey. A trusted customer completing a routine action can continue with less interruption, while a new device, unusual context or higher-risk transaction can trigger stronger authentication.
%%4.%% Deploy passkeys around the experience you already have
Authsignal provides FIDO Certified passkey infrastructure with pre-built UI, components and SDKs for web and native applications. Passkeys can sit alongside adaptive MFA, fallback methods and step-up authentication within the same authentication layer.
Auth0 also supports passkeys, but its current documentation specifies several architectural requirements. Passkeys use database connections and require New Universal Login and an Identifier First flow. Auth0 also states that passkey-only authentication is not supported, while use with an external database depends on the database and migration configuration.
With Authsignal, passkeys can be introduced as part of the wider authentication journey without requiring the underlying identity stack to be redesigned around them, and that model is already being used at scale.
First Credit Union deployed FIDO Certified passkeys with Authsignal across its mobile and online banking experience. More than half of its authentications now use passkeys, with tens of thousands of members enrolled. Getting passkeys live is only the beginning. Getting customers to enroll and keep using them is where the outcome is won.
Better authentication comes from more choice and more control
A stronger authentication experience is not only about which methods are available. It is about having the flexibility to apply the right method, at the right moment, based on the customer, the action and the level of risk.
Authsignal gives teams a dedicated layer for doing that across the customer journey. Passkeys can handle routine authentication, higher-risk actions can trigger step-up, and other verification methods can be introduced where the journey requires them.
Auth0 provides a broader customer identity platform, with authentication, MFA and extensibility across its application flows. Authsignal goes further into authentication orchestration, allowing teams to apply risk-based step-up around actions such as payments, recovery and other sensitive transactions, then carry the same policy across web, mobile, contact center and in-person journeys.
That gives teams more control over authentication itself, without making a wider identity stack rebuild the starting point.
Frequently Asked Questions
Yes. Authsignal helps organizations move customers toward phishing-resistant and lower-friction methods such as passkeys while retaining appropriate fallback options.
By reducing unnecessary challenges and shifting repeat authentication away from SMS, organizations can improve the customer experience while reducing authentication costs. Air New Zealand reduced SMS authentication costs by 90% after introducing passkeys and WhatsApp-first authentication with Authsignal.
Yes. Authsignal actions can apply authentication to payments, account changes, recovery flows and other sensitive customer actions.
Yes. Authsignal is designed to layer on top of existing identity infrastructure rather than requiring a migration or re-platforming project.
Yes. Authsignal supports authentication across web, mobile, kiosk, contact centre, retail and in-person customer interactions using the same authentication layer.
Authsignal supports passkeys as part of the wider authentication journey, including enrollment, rollout, fallback and step-up authentication. This helps teams focus not only on deploying passkeys, but on getting customers to actually adopt and use them.
First Credit Union has deployed Authsignal passkeys across its banking experience, with more than half of all authentications now completed using passkeys.
Yes.
Authsignal provides APIs, SDKs, pre-built UI, custom UI options, authentication methods, a no-code rules engine, session management, custom identity provider integrations, and support for external risk and business signals.
These capabilities can be combined to create authentication journeys around the requirements of the application rather than relying on one fixed authentication flow.
Composable authentication building blocks are individual authentication and verification capabilities that engineering teams can combine into different customer journeys.
Examples include:
- Passkeys
- Biometrics
- Push authentication
- TOTP
- OTP
- Magic links
- Digital credential verification
- Risk signals
- Step-up authentication
- Business rules
- Session management
Rather than requiring every customer to follow the same authentication flow, these capabilities can be combined and orchestrated differently depending on the customer, action, channel, and risk.
Authsignal is best suited to organizations that need more control over authentication across the customer journey, without replacing their existing identity stack.
Authsignal is particularly suited to organizations looking to:
- Reduce unnecessary authentication challenges for trusted, low-risk customers
- Deploy production passkeys and improve customer adoption
- Introduce risk-based authentication across login, payments, recovery and other sensitive actions
- Reduce reliance on SMS OTP by introducing lower-friction, phishing-resistant authentication methods
- Manage authentication policy without hard-coding every rule into customer-facing applications
- Create consistent authentication across channels, including web, mobile, contact centre and in-person journeys
- Improve authentication conversion by balancing security requirements with customer friction
- Modernize authentication without migrating or replacing the existing identity stack
Yes, for teams that want risk-based authentication to extend across the wider customer journey. Authsignal can apply step-up authentication to login, payments, account recovery and other sensitive actions, using contextual and business signals to determine whether an action should be allowed, challenged, reviewed or blocked.
Auth0's Adaptive MFA is centered on login transactions. Auth0 also allows teams to customize MFA behavior using Actions, but this involves adding code to the authentication flow.
Yes. Authsignal provides a visual no-code rules engine for managing authentication policy, while Auth0 Actions allow developers to customize authentication flows using code.
With Authsignal, teams can evaluate device, network, location, transaction and business context to determine when stronger authentication is required, giving product, fraud, security and compliance teams more direct control after the initial integration.
Yes, particularly for teams that want passkeys to sit within a wider authentication journey. Authsignal provides FIDO2-certified passkeys that can be embedded into existing applications using pre-built UI, components or SDKs, then orchestrated alongside other authentication methods, step-up and risk-based policies.
Auth0 also supports passkeys, but its native implementation has specific requirements around Universal Login, authentication profiles and database connections.
Yes. Authentication-specific decisioning that might otherwise be implemented through custom Auth0 Actions can be moved into Authsignal's visual no-code rules engine.
Teams can configure when to allow an action, trigger step-up authentication, send an action for review or block it based on contextual and business signals, reducing the amount of authentication logic that needs to be maintained in code.
Yes. Authsignal integrates with an existing Auth0 environment, so teams can add passkeys, adaptive MFA and no-code authentication policy without replacing Auth0 or migrating users. See the Authsignal integrations page for more information.
Yes. Authsignal is designed to layer on top of existing identity infrastructure, including Amazon Cognito, Azure AD B2C, Keycloak, WSO2 and custom-built systems, with no migration or re-platforming project.
Sources and methodology
Last reviewed: October 2026
Auth0 product information on this page has been verified against Auth0's official product pages, technical documentation, support documentation and pricing information. Authsignal capabilities have been verified against Authsignal's official product pages, technical documentation, integration pages and published customer case studies.