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

# Turn on cross-platform login sync

> Sync your login state between the desktop app and browser on the same device

When cross-platform login sync is enabled, logging in on the desktop app will automatically log you in on the web app **on the same computer**, and vice versa. You will not need to re-enter your Master Password or authenticate with a security key when switching between them.

<Note>
  Requirement: You need to download and install the Locker desktop app to use this feature.
</Note>

## Enable login sync

<Steps>
  <Step title="Go to Security settings">
    Log in to the Locker desktop app. In the left navigation bar, select `Settings` > `Security`.
  </Step>

  <Step title="Activate the feature">
    Under **Cross-platform Sync**, click the `Enable Sync` button.
  </Step>

  <Step title="Verify your identity">
    You will be asked to re-authenticate:

    * **With Master Password:** Enter your password and click `Continue`.
    * **With a security key:** Connect the key to your computer (USB/BLE) > scan your **fingerprint** or enter the key's **PIN**.
  </Step>

  <Step title="Done">
    The system will display a message confirming that sync has been enabled.
  </Step>
</Steps>

***

## How login works after enabling sync

The system simplifies the login process on the same device:

<Tabs>
  <Tab title="On Desktop app">
    Open the app and click the `Unlock` button. You will go straight into your account without entering a password or authenticating with a security key.
  </Tab>

  <Tab title="On Web app (Browser)">
    <Steps>
      <Step title="Send a pairing request">
        On the login screen, select `Open Desktop App` to receive an OTP confirmation code.
      </Step>

      <Step title="Match the OTP code">
        Verify that the **6-digit OTP code** displayed on both the Web and Desktop app is the same.
      </Step>

      <Step title="Confirm">
        Click `Confirm` on the Desktop app, then click `Confirm` on the Web app.
      </Step>
    </Steps>
  </Tab>
</Tabs>

<Warning>
  Note: If you log out of the desktop app, your account on the web app will also be logged out automatically, and vice versa.
</Warning>

***

## Disable cross-platform login sync

Disable this feature if you want to log in independently on each platform and require authentication every time.

<Steps>
  <Step title="Access settings">
    Open the Desktop app, go to `Settings` > `Security`.
  </Step>

  <Step title="Disable sync">
    Under **Cross-platform Sync**, click the `Disable Sync` button.
  </Step>

  <Step title="Re-authenticate">
    Verify your identity with **Master Password** or **Security Key**, the same as when enabling.
  </Step>

  <Step title="Done">
    The system will confirm that sync has been disabled.
  </Step>
</Steps>