Secure Screen Wrapper #

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

Features #

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: ^1.0.0

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!