Secure Screen Wrapper

A Flutter package that prevents screenshots and screen recording across Android, iOS, and Web platforms.

Features

Platform	Protection Method	Effectiveness
Android	FLAG_SECURE	Complete block
iOS	Secure text entry layer	Screenshots appear black
Web	Multi-layer protection	Best effort (browser limitations)

Web Protection Layers:

• Disables right-click context menu
• Blocks text selection and copy
• Prevents screenshot keyboard shortcuts
• Blurs content when tab loses focus
• Adds watermark overlay
• Prevents drag and drop

Installation

Add to your pubspec.yaml:

dependencies:
  secure_screen_wrapper: ^1.0.2

Run:

flutter pub get

Usage

Protect Specific Screens

import 'package:secure_screen_wrapper/secure_screen_wrapper.dart';

class PaymentScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return SecureScreenWrapper(
      child: Scaffold(
        appBar: AppBar(title: Text('Payment Details')),
        body: YourSensitiveContent(),
      ),
    );
  }
}

Global Protection

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await SecureScreen.enable();
  runApp(MyApp());
}

Dynamic Control

SecureScreenWrapper(
  enabled: _isSecureMode, // Toggle with state
  child: YourWidget(),
)

Platform Setup

Android

No additional setup required!

iOS

No additional setup required!

Web

No additional setup required!

Important Notes

• Android: Screenshots are completely blocked at OS level
• iOS: Screenshots can be taken but appear as black screens
• Web: Protection has limitations due to browser security restrictions. Determined users with external tools may still capture content, but casual screenshot attempts are blocked.

API Reference

SecureScreenWrapper

Widget that protects its child from screenshots.

Properties:

• child (Widget, required): The widget to protect
• enabled (bool, optional): Enable/disable protection (default: true)

SecureScreen

Global security control.

Web Platform Limitations

IMPORTANT: Web browsers cannot completely block screenshots at the OS level due to browser security restrictions.

What Web Protection Does:

Disables right-click context menu Blocks text selection and copy Prevents common keyboard shortcuts (PrintScreen, Ctrl+Shift+S, etc.) Blurs content when tab loses focus Adds watermark overlay Blocks developer tools shortcuts Prevents drag and drop of images

What Web Protection CANNOT Do:

Block OS-level screenshot tools (Windows Snipping Tool, macOS Cmd+Shift+4, etc.) Block browser extensions that capture screenshots Block external screen capture devices/software Prevent screenshots if JavaScript is disabled

Recommendation:

For truly sensitive data on web, consider:

1. Using session-based access with time limits
2. Adding visible watermarks with user info
3. Implementing server-side watermarking
4. Using DRM-protected content delivery
5. Requiring authentication and logging access

Methods:

• SecureScreen.enable(): Enable protection globally
• SecureScreen.disable(): Disable protection globally

Testing

Try these on different platforms:

• Take a screenshot (Android: blocked, iOS: black screen, Web: prevented)
• Right-click (Web: disabled)
• Select text (Web: disabled)
• Press PrintScreen (Web: prevented)

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Issues

Found a bug? Report it here

Support

If you find this package helpful, please give it a ⭐ on GitHub!