> ## Documentation Index
> Fetch the complete documentation index at: https://auth0-docs-event-stream-action-templates.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Passwordless Authentication Methods on Auth0

> Describes authentication methods supported by Auth0 passwordless connections, including email, magic link, and SMS.

With <Tooltip tip="Passwordless: Form of authentication that does not rely on a password as the first factor." cta="View Glossary" href="/docs/glossary?term=Passwordless">Passwordless</Tooltip> connections, users can log in without a password. Instead, they can use a variety of other authentication methods. Auth0 Passwordless connections support the following authentication methods:

| Factor                                                                                | Description                                                                                                                                                                                                                        |
| ------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Email](/docs/authenticate/passwordless/authentication-methods/email-otp)             | The user is asked to enter their email address, to which Auth0 sends a one-time-use code. The user enters the code into your application.                                                                                          |
| [Magic Link](/docs/authenticate/passwordless/authentication-methods/email-magic-link) | The user is asked to enter their email address, to which Auth0 sends an email with a link in it. The user clicks the link and is directly logged in to your application.                                                           |
| [SMS](/docs/authenticate/passwordless/authentication-methods/sms-otp)                 | The user is asked to enter their phone number, to which Auth0 sends a one-time-use code. By default, Auth0 uses Twilio to send the code, but if you have a custom SMS gateway, you can modify your connection to use that instead. |