> For the complete documentation index, see [llms.txt](https://docs.keyless.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keyless.io/consumer/mobile-sdk-reference/introduction-screen.md).

# Introduce Keyless to Users

In order to introduce Keyless to users before the very first enrollment, it may be helpful to show an explanatory screen on what is the flow about to start.

<figure><img src="/files/yqV8jUCu9Rduh5VNmyPZ" alt="" width="188"><figcaption></figcaption></figure>

This screen is showable via the public API `Keyless.showIntroductionScreen`. This function can be called at any moment (even before setup). It expects a completion for when the user taps on the main CTA. The message can be customized as explained in [UI-Customization](/consumer/mobile-sdk-reference/ui-customization.md)

## Examples

{% tabs %}
{% tab title="Android" %}

```kotlin
Keyless.showIntroductionScreen { 
    // Perform actions after user taps CTA
}
```

{% endtab %}

{% tab title="iOS" %}

```swift
Keyless.showIntroductionScreen { 
    // Perform actions after user taps CTA
}
```

{% endtab %}
{% endtabs %}