> ## Documentation Index
> Fetch the complete documentation index at: https://docs.corbado.com/llms.txt
> Use this file to discover all available pages before exploring further.

# One-Tap Login: Seamless Passkey Authentication

> Discover how Corbado's One-Tap Login revolutionizes user authentication with a single touch, boosting security and user experience. No more usernames!

<Columns cols={3}>
  <Card href="https://cognito.cloud.corbado-demo.com">
    Try Demo
  </Card>

  <Card href="https://calendly.com/vincent-delitz">
    Talk to Adoption Engineer
  </Card>

  <Card href="https://www.corbado.com/passkeys/enterprise">
    Whitepaper
  </Card>
</Columns>

## 1. What is One-Tap Login?

<Frame>
  <img noZoom src="https://mintcdn.com/corbado-43/CQvNeVWWPUAy-5gE/images/corbado-connect/one-tap-login.webp?fit=max&auto=format&n=CQvNeVWWPUAy-5gE&q=85&s=713c38113a33dd0c52fc0ed814e82da7" alt="A login screen showing a 'Continue with passkey' button for one-tap access." width="427" height="411" data-path="images/corbado-connect/one-tap-login.webp" />
</Frame>

One-Tap Login is a feature from **Corbado Connect** that allows your users to sign in to your application with a single touch or click, plus a quick biometric verification like Face ID or a fingerprint scan. It completely eliminates the need for users to type their username or email address on subsequent visits, creating a truly seamless and secure login experience.

This is made possible by our dynamic **One-Tap Passkey Button**, which intelligently appears for returning users who have previously used a passkey on that device.

## 2. How It Works: The User's Journey

The magic of One-Tap Login lies in its simplicity. Here's a typical user journey:

<Steps>
  <Step title="First Interaction: Creating a Passkey">
    A user signs up or logs in for the first time. During this process, they are prompted to create a passkey, which securely links their account to their device. Our [Passkey Intelligence](/corbado-connect/features/passkey-intelligence) engine notes that this user now has a passkey on this device.
  </Step>

  <Step title="The Return: One-Tap Login Appears">
    When the user returns to your app, our system recognizes them. Instead of a blank login form, they are greeted with a personalized button, like "Login with Passkey as **[alice@example.com](mailto:alice@example.com)**".
  </Step>

  <Step title="Instant Access: The Tap">
    The user simply taps the button, verifies their identity with their device's built-in biometrics (like Face ID or fingerprint), and they're in! No typing, no forgotten passwords, just instant access.
  </Step>
</Steps>

<Tip>
  **Visual UI Flow Examples**: See the [One-Tap Login UI flows](/passkey-ui-flows/web/passkey-login/one-tap) for platform-specific visual demonstrations of this journey across macOS, Windows, iOS, and Android.
</Tip>

## 3. Key Benefits of One-Tap Login

Implementing One-Tap Login offers significant advantages for both your users and your business.

* **Drastically Improved User Experience:** By removing the friction of typing credentials, you make logging in effortless and fast, leading to happier users.
* **Increased Conversion and Retention:** A smoother login process reduces drop-offs and encourages users to return more often.
* **Enhanced Security:** One-Tap Login is built on the foundation of passkeys, which are phishing-resistant and far more secure than passwords.
* **Boosted Passkey Adoption:** Highlighting the passkey option as the easiest path to login encourages more users to adopt this secure technology.

## 4. Smart Handling of Multiple Scenarios

Corbado's One-Tap Login is designed to be intelligent and handle various situations gracefully:

* **Multiple Accounts:** If a user has more than one account, the One-Tap button will default to the last one used, with an easy option to switch.
* **New Devices:** On a new device, the user will go through the standard login flow once. After their first passkey use on that device, One-Tap Login will be available for all future visits.
* **Seamless Fallbacks:** One-Tap Login is powered by our [Passkey Intelligence](/corbado-connect/features/passkey-intelligence) engine, which ensures that if a passkey isn't available, the user is seamlessly guided to another authentication method without any confusion.

## 5. Implementation and UI Examples

<CardGroup cols={2}>
  <Card title="Visual UI Flows" icon="mobile" href="/passkey-ui-flows/web/passkey-login/one-tap">
    See platform-specific UI implementations and user journey flows for macOS, Windows, iOS, and Android.
  </Card>

  <Card title="Integration Guide" icon="code" href="/corbado-connect/overview/getting-started">
    Step-by-step guide to implement One-Tap Login in your application using Corbado Connect.
  </Card>
</CardGroup>

## 6. Get Started

Ready to offer your users the future of authentication? One-Tap Login is a core part of **Corbado Connect**.

<Steps>
  <Step title="Explore the Technology">
    * [**Learn about Passkey Intelligence**](/corbado-connect/features/passkey-intelligence) - The engine that powers smart One-Tap detection
    * [**View UI Flow Examples**](/passkey-ui-flows/web/passkey-login/one-tap) - See how One-Tap looks across different platforms
  </Step>

  <Step title="Start Implementation">
    * [**Getting Started with Corbado Connect**](/corbado-connect/overview/getting-started) - Complete integration guide
    * [**Web UI Components**](/corbado-connect/web-ui-components/overview) - Ready-to-use components for quick implementation
  </Step>

  <Step title="Advanced Features">
    * [**Gradual Rollout**](/corbado-connect/features/gradual-rollout) - Deploy One-Tap Login progressively to your user base
    * [**Split Testing**](/corbado-connect/features/split-tests) - A/B test One-Tap Login against traditional methods
  </Step>
</Steps>