---
title: "Building Passport App"
slug: "s3suite94-building-passport-app"
updated: 2026-10-27T18:42:16Z
published: 2026-10-27T18:42:16Z
canonical: "docs.onespan.com/s3suite94-building-passport-app"
---

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

# Building Passport App

Prior to customizing Passport App, the initial step is to extract the Passport App project and ensure that it builds successfully in Android Studio.

## Building Passport App in Android Studio

1. Unzip the passport_<version_number>.zip file
2. Open Android Studio and import the app_passport project gradle file located at <PASSPORT_HOME>/build.gradle

### Configuring the App Signing Keystore

The project is configured to use default.keystore for app signing. The keystore file is located in the <PASSPORT_ROOT>/PassportApp/android-studio/keystores folder. To use a different file, create a new keystore and replace the default.keystore file. To create a new keystore, follow the instructions at [Sign your app | Android Studio](https://developer.android.com/tools/publishing/app-signing.html).

```plaintext
Passport App can use a different keystore file having a different name or location. The following configuration determines the keystore file used for the module <PASSPORT_HOME>/app/build.gradle
signingConfigs {
    debug {
        storeFile file("${rootProject.projectDir}/../keystores/default.keystore")
        storePassword "android"
        keyAlias "androiddebugkey"
        keyPassword "android"
    }
}
```

- Build the project in Android Studio by selecting **Build** > **Rebuild Project**.
- Passport App is now ready to be customized.