Pure Dart Anti-Screenshot Protection #

A Flutter package that provides anti-screenshot protection without requiring native platform code. This package uses pure Dart/Flutter implementations to protect sensitive content.

🌟 Features #

• ✅ Pure Dart Implementation - No native code required
• 🛡️ App Lifecycle Protection - Hides content when app goes to background
• 👆 Gesture Detection - Detects suspicious tap patterns
• 🔒 Secure Text Widget - Auto-hiding sensitive text
• 🌫️ Blur Protection - Animated blur effects for protection
• 📱 Cross-Platform - Works on iOS and Android
• 🎯 Widget-Level - Apply protection to specific widgets
• ⚡ Lightweight - Minimal performance impact

🚀 Installation #

dependencies:
anti_screenshot_protection: ^1.0.1

📖 Usage #

Basic Protection #

AntiScreenshotWidget(
child: YourSensitiveContent(),
)

Advanced Usage #

AntiScreenshotWidget(
enabled: true,
warningMessage: 'Protected Content',
blurBackground: true,
blurIntensity: 10.0,
onProtectionTriggered: () {
print('Protection activated!');
},
child: YourSensitiveContent(),
)

Secure Text #

SecureText(
'Credit Card: 1234 5678 9012 3456',
hideDelay: Duration(seconds: 10),
preventSelection: true,
)

Gesture Blocking #

ScreenshotBlocker(
blockOnLongPress: true,
showFeedback: true,
onBlockedAttempt: () {
print('Suspicious gesture detected!');
},
child: YourContent(),
)

Blur Protection #

BlurProtection(
blurSigma: 15.0,
animationDuration: Duration(milliseconds: 500),
child: YourContent(),
)

🔧 How It Works #

App Lifecycle Protection #

• Monitors app lifecycle states
• Automatically hides content when app goes to background
• Shows protection overlay during inactive states

Gesture Detection #

• Detects rapid tapping patterns
• Blocks long press gestures
• Provides haptic feedback for blocked actions

Secure Text #

• Automatically hides after specified duration
• Prevents text selection
• Tap to reveal hidden text

Blur Effects #

• Animated blur transitions
• Customizable blur intensity
• Overlay color options

⚠️ Limitations #

Since this is a pure Dart implementation, it has some limitations compared to native implementations:

1. Cannot prevent system screenshots - Only hides content from view
2. App switching protection only - Protects during app lifecycle changes
3. No screen recording detection - Cannot detect active screen recording
4. Gesture-based protection - Relies on detecting suspicious patterns

💡 Best Practices #

1. Combine Multiple Layers: Use multiple protection widgets together
2. User Education: Inform users about protection measures
3. Reasonable Timeouts: Don't hide content too aggressively
4. Accessibility: Ensure protection doesn't break accessibility features
5. Testing: Test on both platforms and different screen sizes

🔒 Security Considerations #

This package provides UI-level protection and should be combined with other security measures:

• Server-side validation
• Data encryption
• Certificate pinning
• Biometric authentication
• Secure storage solutions

🤝 When to Use Native Code #

Consider native implementations for:

• System-level screenshot prevention
• Screen recording detection
• Hardware-based security features
• Enterprise security requirements

📝 License #

MIT License - feel free to use in your projects!