# Session expiry

Tells the user their session ended and how to start again.

## Preview

```html title="For your security, we signed you out"
<main class="govbb-width-container govbb-main-wrapper" id="main-content">
  <h1 class="govbb-text-h1">For your security, we signed you out</h1>
  <p class="govbb-text-body-lg">
    You were inactive for 20 minutes, so we ended your session.
  </p>
  <p class="govbb-text-body">
    We did not save your answers. You will need to start again.
  </p>
  <a class="govbb-button" href="/service/start/">Start again</a>
</main>
```

Show this page when a session times out and the user tries to continue. Say why
they were signed out, whether their answers were kept, and give one clear way to
resume.

## Warn before you time out

Where you can, warn the user before the session ends - a dialog a couple of
minutes ahead with a "Stay signed in" button that extends the session. Landing
here should be the fallback, not the first the user hears of it.

## Be honest about saved data

If answers were discarded, say so plainly so the user knows to expect a fresh
start. If you did save progress, tell them where they will pick up and send them
back to that step instead of the beginning.