QR Sync 🔄

Securely share QR data across devices with timeboxed encryption

✨ Overview

QR Sync lets you scan a QR code on one device and access its content securely on any other device, anywhere, anytime. Your data stays encrypted in the cloud for just 5 minutes before being permanently deleted - balancing convenience with security.

Just a boring day and a good project. :)

🚀 Features

• Cross-Platform Compatibility: Works on any device with a web browser
• End-to-End Encryption: PIN + Character authentication for secure access
• Auto-Deletion: Data automatically removed after 5 minutes
• Mobile Optimized: Clean, responsive interface on all screen sizes
• Easy Sharing: Simple workflow for accessing data across devices

📱 How It Works

Step 1: Scan a QR Code

Open the app on your mobile device, click "Start Scanning", and grant camera permissions. Scan any QR code to capture its data.

Step 2: Enable QR Sync

After scanning, tap "Enable QR Sync" to prepare your data for cross-device access.

Step 3: Create Security Credentials

Set a 4-digit PIN and select two letters to create your secure access key. This combination is used for encryption and hashing.

Step 4: Access on Any Device

Open QR Sync on any other device (web, mobile, tablet) and click "Access QR Sync Data".

Step 5: Enter Your Credentials

Enter the same 4-digit PIN and two characters you selected earlier, then click "Access Data".

Step 6: View Your Data

Your data will be displayed securely. A countdown timer shows when the data will be automatically deleted.

⏱️ Security Note

For your privacy and security:

• Data remains encrypted in the database
• All information is automatically deleted after 5 minutes
• Your encryption keys are never stored in plain text

💻 Technical Implementation

QR Sync uses:

• React with Next.js for the frontend
• Supabase for backend storage and authentication
• SHA-256 hashing for PIN security
• Responsive design for all devices

🔧 Installation

# Clone the repository
git clone https://github.com/yourusername/qr-sync.git

# Navigate to project directory
cd qr-sync

# Install dependencies
npm install

# Start development server
npm run dev

🤝 Contributing

Contributions are welcome! Feel free to fork this repository and submit pull requests to help improve QR Sync.

📄 License

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

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Enjoy this project!

Fork and use for your personal projects.

Happy Coding! 😊