These methods let you use other services to register and authenticate.

## Google
When this method is enabled, customers can use their Google accounts to authenticate.
1. Go to **Settings > Authentication for mobile apps**.
2. Scroll down to **Authentication methods**.
3. In the **Google authentication** section, click **Show**.
4. Enable the toggle.
5. Click **Apply**.
6. Implement the authentication methods as described in the:
    - [Mobile SDK documentation](/developers/mobile-sdk/user-identification-and-authorization/authenticate-external-providers)
    - [API authentication how-to guide](/developers/api/api-authorization/client-login)
    - [Authentication API reference](https://developers.synerise.com/IdentityandAccessManagement/IdentityandAccessManagement.html#tag/Authorization)

## Facebook
When this method is enabled, customers can use their Facebook accounts to authenticate.
1. Go to **Settings > Authentication for mobile apps**.
2. Scroll down to **Authentication methods**.
3. In the **Facebook authentication** section, click **Show**.
4. Enable the toggle.
5. Click **Apply**.
6. Implement the authentication methods as described in the:
    - [Mobile SDK documentation](/developers/mobile-sdk/user-identification-and-authorization/authenticate-external-providers#facebook-login)
    - [API authentication how-to guide](/developers/api/api-authorization/client-login)
    - [Authentication API reference](https://developers.synerise.com/IdentityandAccessManagement/IdentityandAccessManagement.html#tag/Authorization)

## Apple
When this method is enabled, customers can use their iCloud accounts to authenticate.
1. Go to **Settings > Authentication for mobile apps**.
2. Scroll down to **Authentication methods**.
3. In the **Apple authentication** section, click **Show**.
4. Enable the toggle.
5. In the field that appears, enter the app bundle identifier.  
    For details, see [Apple Developer Documentation](https://developer.apple.com/documentation/appstoreconnectapi/bundle_ids).
5. Click **Apply**.
6. Implement the authentication methods as described in the:
    - [Mobile SDK documentation](/developers/mobile-sdk/user-identification-and-authorization/authenticate-external-providers#sign-in-with-apple)
    - [API authentication how-to guide](/developers/api/api-authorization/client-login)
    - [Authentication API reference](https://developers.synerise.com/IdentityandAccessManagement/IdentityandAccessManagement.html#tag/Authorization)