Passwordless with Universal Login

Enable Passwordless for Universal Login

To configure Universal Login to support connections, you’ll need to set the Authentication Profile to use a supported login flow, and update your application to specify the connection during authentication.

Enable Identifier First

Select either Identifier First or Identifier First + Biometrics.

Update your application

Depending on the type of connections you have enabled for your application, you may need to update your application to specify a Passwordless connection during login:

Database connection	Passwordless connection	Need to specify?	User experience
Yes	SMS and/or Email	Yes	Specified Passwordless connection is presented during login.
No	SMS and Email	No	Passwordless connection that was created first is presented.
No	SMS or Email	No	Passwordless connection is presented (along with any enabled Social connections) during login.

Database connection

Passwordless connection

Need to specify?

User experience

Yes

SMS and/or Email

Yes

Specified Passwordless connection is presented during login.

SMS and Email

Passwordless connection that was created first is presented.

SMS or Email

Passwordless connection is presented (along with any enabled Social connections) during login.

To specify a Passwordless connection during login, you must pass the connection parameter and its value (either sms or email) to the Auth0 Authentication API Login endpoint:

https://mytenant.us.auth0.com/authorize?client_id={id}&``connection={sms|email}``&scope=…&response_type=code&response_mode=query&state=…&redirect_uri=http%3A%2F%2Flocalhost%3A3000&code_challenge=…

If you are using one of our SDKs, you can specify a Passwordless connection during initialization. For example:

auth0 = await createAuth0Client({
     domain: config.domain,
     client_id: config.clientId,
     connection: "email"
  });

auth0 = await createAuth0Client({
     domain: config.domain,
     client_id: config.clientId,
     connection: "sms"
  });

If you are using Passwordless with Universal Login and Single Sign-On, connection parameters sms and email do not utilize the existing Auth0 session, and the user will be prompted to log in.

Test the connection

When the user is prompted to enter their OTP, they’ll see one of the following screens:

Add Login

Provision Users

Passwordless with Universal Login

Before you start

Enable Identifier First

Update your application

Test the connection

Before you start

​Enable Passwordless for Universal Login

​Enable Identifier First

​Update your application

​Test the connection

​Signup

​Login

Enable Passwordless for Universal Login

Enable Identifier First

Update your application

Test the connection

Signup

Login