> ## Documentation Index
> Fetch the complete documentation index at: https://crossmint-wallets-docs-2-5.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> A user management solution tightly integrated with all other Crossmint products

Authenticate users using web3 or traditional sign-in methods:

* **Email OTP**: passwordless sign-in using a one time code delivered to the user's email.
* **Social Accounts**: Sign in with Google, Apple, X, and more.
* **Farcaster**: using the [Sign In With Farcaster (SIWF) standard](https://github.com/farcasterxyz/protocol/discussions/110).
* **External wallets**: connect with crypto wallets for Web3 authentication.

## Key Characteristics

<CardGroup cols={3}>
  <Card title="Seamless connection between wallets and user accounts" icon="wallet" iconType="duotone">
    Optionally create or link user wallets with all your user accounts, to have a single, unified identity system
    across your backend and web3 app.
  </Card>

  <Card title="Securely authorize your users" icon="table-list" iconType="duotone" color="#ECB078">
    Authorize calls to your backend services, and to any of Crossmint's products: minting, payments, subscriptions,
    etc.
  </Card>

  <Card title="Drag and drop integration" icon="bolt" color="#E6DB63">
    Setup is quick and easy. Launch your app in under 5 minutes.
  </Card>
</CardGroup>

## Get started

<CardGroup cols={1}>
  <Card title="Quickstart" icon="bolt" color="#E6DB63" href="/authentication/quickstart">
    Log-in your first user in less than 5 minutes.
  </Card>
</CardGroup>

<CardGroup cols={3}>
  <Card title="Create Wallets for your users" icon="wallet" iconType="duotone" color="E085FC" href="/wallets/quickstarts/client-side-wallets">
    More detailed guide on how to integrate wallets upon user login.
  </Card>

  <Card title="User Profile" icon="user" iconType="duotone" color="#65CAFF" href="/authentication/user-profile">
    Get and update user information.
  </Card>

  <Card title="Talk to an expert" icon="message" iconType="duotone" color="#ADD8E6" href="https://www.crossmint.com/contact/sales">
    Contact our sales team for advanced support.
  </Card>
</CardGroup>