🔐 ChatGPT Password Locker Extension (with Cloud Sync)

This is a browser extension that allows users to lock individual ChatGPT conversations with per-chat passwords — even when sharing the same account. Each chat can be locked with a unique password, and access is only granted upon entering the correct password.

✨ Features

• Lock any ChatGPT conversation with a custom password 🔒
• Automatically prompts for password when opening a locked chat
• Cloud-based sync using MongoDB Atlas and Vercel Serverless API
• Works across devices and sessions for the same ChatGPT account
• Simple, clean UI built directly into the ChatGPT interface

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🚀 How It Works

1. The extension runs on chat.openai.com or chatgpt.com
2. When a user clicks "🔐 Lock Chat", the extension stores the password in a remote MongoDB database using a Vercel API
3. When the user visits that chat again, the extension prompts for a password before revealing the content

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🛠️ Tech Stack

• Browser Extension (Manifest V3, JS, CSS)
• Vercel Serverless Functions (Next.js API routes)
• MongoDB Atlas (for password storage)
• Optional: Password hashing (coming soon)

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🧩 Installation (Dev)

1. Clone this repo and unzip
2. Go to chrome://extensions in your browser
3. Enable Developer Mode
4. Click "Load unpacked" and select the extension folder

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🌐 Vercel + MongoDB Setup

1. Create a MongoDB Atlas cluster
2. Create a database: chatlocks and a collection: locks
3. Set up a Vercel project with a MONGODB_URI environment variable
4. Push the api/lock route to Vercel

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📁 Folder Structure

chatgpt-password-locker/
├── manifest.json               # Chrome extension config (Manifest V3)
├── content.js                  # Main script injected into ChatGPT
├── style.css                   # Styles for the lock screen UI
├── README.md                   # This file
└── api/                        # (Optional) Vercel serverless backend
    └── lock/
        └── route.ts            # GET & POST endpoints for MongoDB chat locks

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✅ Future Features

• 🔑 Password hashing (bcrypt or argon2)
• 🧠 "Unlock All" master password
• 🌍 Multi-user cloud sync using email/login
• ✨ Slicker modals, animations, and UI polish

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👥 Author

Built by Tech Horizons Club
Open to collaboration and improvements 🚀

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📄 License

MIT – Use it, modify it, and build something great with it!