> ## Documentation Index
> Fetch the complete documentation index at: https://docs.authsignal.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Mobile SDKs
> Learn how to use the Authsignal SDKs for iOS, Android, React Native, and Flutter.
## Requirements
Passkeys are supported only on **iOS 15** and above.
Passkey autofill requires **iOS 16** and above.
The minimum SDK version required is **Android 6 (API level 23)** or higher.
The minimum Java version required is **Java 17**.
We recommend using React Native version `0.73` or higher because this version includes [Android 14 support](https://reactnative.dev/blog/2023/12/06/0.73-debugging-improvements-stable-symlinks#android-14-support).
This requires upgrading to **Java 17** and **AGP 8** or higher.
The minimum SDK version required is `3.2.2` and the minimum Flutter version is `3.3.0`.
## Installation
**Cocoapods**
Add Authsignal to your Podfile.
```rb theme={null}
pod 'Authsignal', '~> 2.3.0'
```
**Swift Package Manager**
Add the following to the `dependencies` value of your `Package.swift` file.
```swift theme={null}
dependencies: [
.package(
url: "https://github.com/authsignal/authsignal-ios.git",
from: "2.3.0"
)
]
```
Ensure that you have `mavenCentral` listed in your project's buildscript repositories section.
```groovy theme={null}
buildscript {
repositories {
mavenCentral()
...
}
}
```
Add the following to your app's `build.gradle` file.
```groovy theme={null}
implementation 'com.authsignal:authsignal-android:3.3.0'
```
Install using yarn.
```bash theme={null}
yarn add react-native-authsignal
```
Then link the native iOS dependencies.
```bash theme={null}
npx pod-install ios
```
Add the package dependency to your app.
```bash theme={null}
flutter pub add authsignal_flutter
```
## Initialization
Initialize the client with your tenant ID and the API URL for your region.
| Region | API URL |
| ------------- | ---------------------------------- |
| US (Oregon) | `https://api.authsignal.com/v1` |
| AU (Sydney) | `https://au.api.authsignal.com/v1` |
| EU (Ireland) | `https://eu.api.authsignal.com/v1` |
| CA (Montreal) | `https://ca.api.authsignal.com/v1` |
You can find your tenant ID in the [Authsignal Portal](https://portal.authsignal.com/organisations/tenants/api).
```swift iOS theme={null}
import Authsignal
let authsignal = Authsignal(
tenantID: "YOUR_TENANT_ID",
baseURL: "YOUR_REGION_BASE_URL"
)
```
```kotlin Android theme={null}
import com.authsignal.Authsignal
val authsignal = Authsignal(
tenantID = "YOUR_TENANT_ID",
baseURL = "YOUR_REGION_BASE_URL",
activity = this, // An activity-based context param is required only when using passkeys
)
```
```ts React Native theme={null}
import { Authsignal } from "react-native-authsignal";
const authsignal = new Authsignal({
tenantID: "YOUR_TENANT_ID",
baseURL: "YOUR_REGION_BASE_URL",
});
```
```dart Flutter theme={null}
import 'package:authsignal_flutter/authsignal_flutter.dart';
final authsignal = Authsignal("YOUR_TENANT_ID", baseURL: "YOUR_REGION_BASE_URL");
```
## Usage
## Repositories