📱 QR Code Scanner & History Manager

A fast, web-based QR Code Scanner that allows users to scan codes using their device camera and save their scan history securely. This project is built as a Progressive Web App (PWA), meaning it can be installed on mobile devices just like a native app.

🔗 Live Demo: https://qr-code-scanner-b6d67.web.app

✨ Features

• Real-time Scanning: Instantly detects and decodes QR codes using the device camera.
• User Authentication: Secure login system to personalize the experience.
• Scan History: Automatically saves scanned links and text to the user's account dashboard.
• PWA Support: Can be installed on Android and iOS home screens for a full-screen app experience.
• Responsive Design: Works smoothly on desktop, tablets, and mobile phones.

🛠️ Tech Stack

• Frontend: HTML5, CSS3, JavaScript
• Backend/Hosting: Google Firebase (Hosting & Authentication)
• Scanning Library: HTML5-QRCode (or whichever library you used, e.g., jsQR)

🚀 How to Run Locally

If you want to run this project on your own computer:

1. Prerequisites:

   • Install Node.js
   • Install Firebase CLI: npm install -g firebase-tools

2. Clone or Download the project:

   • Download the files to a folder (e.g., scanner).

3. Login to Firebase:

   firebase login

4. Initialize the Project:

   firebase init hosting

5. Deploy to Live Site:

   firebase deploy

📱 How to Install on Mobile (PWA)

1. Open the Live Link in Chrome (Android) or Safari (iOS).
2. Android: Tap the prompt "Add to Home Screen" or install from the browser menu.
3. iOS: Tap the "Share" button -> "Add to Home Screen".
4. The app will appear on your device and launch in full-screen mode.

🔒 Safety & Privacy

This application uses Google Firebase for secure authentication. We do not share personal data with third parties. The camera is accessed only for scanning purposes with user permission.

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Created by Nadimul