> ## Documentation Index > Fetch the complete documentation index at: https://docs.m1amdocs.com/llms.txt > Use this file to discover all available pages before exploring further. # Onboard and Authenticate with Email Address or Mobile Number Storefront Gateway provides user onboarding and authentication with an email/mobile number and password. A new user navigates to a organization's login page, and once authenticated, they can sign up and purchase services. ## User Onboarding and Authentication Flow **Preconditions** * The doesn't User ID exist in Storefront Gateway. Following is a typical user onboarding example for this flow: * The new user visits the organization's login page to sign up. * Storefront Gateway sends a verification message with a One-Time Password (OTP) to the user's submitted email/mobile number. * The new user submits a new password and related information such as **Display Name**, **First Name**, **Last Name**, and **Language**. * The user's password is validated. * User ID is created and stored in Storefront Gateway. * Storefront Gateway verifies the user identity. * User is authenticated. ## Onboard and Authenticate User with Password The new user starts with the first **Onboard and Authenticate** Process and completes their journey with the **Onboard, Authenticate and Activate** Process. Onboard user with password authentication flow The second process is invoked after the process step verifies that the user doesn't exist in Storefront Gateway. **Note:** If the `create-password-prompt` is enabled (true) on the UI, the process step prompts the user to set their password. Onboard, authenticate and activate process flow for a new user **Parent topic:**[Onboard and Authenticate Process](onboardAuthenticateUserV2) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.