> For the complete documentation index, see [llms.txt](https://sonic-ai-works.gitbook.io/sonic-networks-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sonic-ai-works.gitbook.io/sonic-networks-docs/help-center/mobile-app-pin-and-biometrics.md).

# Mobile app, PIN & biometrics

Mobile navigation, start screen, local PIN, biometrics, themes and Studio behavior in the SONIC Expo app.

The SONIC mobile app uses a focused five-destination navigation system:

```
Home · Projects · Studio · Wallet · Settings
```

Studio is the centered raised red control and opens the primary AI creation workspace.

## Start screen

Both light and dark themes use the same core actions:

* **Get Started** — onboarding/new account flow;
* **Log In** — existing account flow;
* Google / Apple / email options when enabled.

The dark screen uses the approved red/black waveform background. The light screen uses a white/off-white surface with pale-red waveforms.

## PIN

The optional app PIN is a **local device/app protection mechanism**. It is not your server password and is not a wallet secret.

Never reuse your wallet recovery phrase, private key or wallet password as a SONIC app PIN.

## Biometrics

Face ID / Touch ID or platform equivalents may be used to unlock the local app session where supported. Sensitive server, billing or wallet actions can still require additional authentication/confirmation.

## Themes

Settings → Appearance can support System, Light and Dark modes. Theme choice changes presentation only; it does not affect wallet network, account permissions or plan access.

## Lost PIN

If you forget a local PIN, use the application's authenticated recovery/reset flow. Do not reinstall or clear secure storage until you understand whether unsynced local drafts would be affected.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://sonic-ai-works.gitbook.io/sonic-networks-docs/help-center/mobile-app-pin-and-biometrics.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.