Passwordless SMS & Email Authentication

OpenID Connect (OIDC)Passwordless connections in Auth0 allow users to login without the need to remember a password. The benefits of enabling passwordless connections include:

  • Improved user experience, particularly on mobile applications, since users only need an email address or phone number to sign up and the credential used for authentication is automatically validated after sign-up.

  • Enhanced security since users avoid the insecure practice of using the same password for many purposes.

  • Less effort for you since you will not need to implement a password reset procedure.



Passwordless connections use an authentication channel like SMS or email, which need to be configured under Connections > Passwordless in the Auth0 Dashboard.

We recommend implementing passwordless with SAMLUniversal Login. If you are using embedded login with Passwordless or Auth0.js, you will need to enable custom domains for your tenant. To learn more, see Custom Domains.



See the following guides to learn how to implement multi-factor authentication (MFA)passwordless authentication for the following scenarios:

Passwordless in Single-Page Apps

Database and Custom Connections

Passwordless in Regular Web Apps


Passwordless on iOS

Passwordless on Android

Passwordless API

To build your own implementation or understand how this works under the hood, see the complete API reference.

Advanced Topics

Have Questions?

You may find the answers on the Auth0 Passwordless FAQ.