access-card-generator

Secure offline generator for QR access cards

access-card-generator is a secure, privacy-focused web application that generates unique access cards for Cryptnox wallets. Each card includes a QR code and configurable PIN/PUK and is created entirely offline to ensure complete privacy and security.

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System requirements

To run the access-card-generator smoothly, ensure the following:

• A modern web browser (Firefox, Chrome, Edge, Safari, etc.)
• JavaScript enabled
• No internet connection required — the application works entirely offline

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Access the application

Tip

Using offline mode is recommended for privacy and security.

From GitHub Pages

Open the application hosted on GitHub Pages here.

From source

Open cryptnox_random_access_card_generator.html in any modern web browser.

git clone https://github.com/cryptnox/access-card-generator.git
cd access-card-generator
firefox cryptnox_random_access_card_generator.html

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Features

Core functionality

• QR code generation: Create unique QR codes for each access card
• Configurable PIN length: Choose between 4, 5, 6, 7, 8, or 9-digit PINs (Recommended 9-digit PINs)
• Batch generation: Generate multiple cards in a single session
• Export options: Download as PDF or print directly
• Offline operation: All processing happens locally, no internet needed
• Zero data collection: Fully privacy-focused

Security features

• Content Security Policy (CSP): Strict CSP headers prevent external resource loading
• No external dependencies: All libraries embedded
• No tracking: No analytics or external requests
• Local processing: Everything happens in your browser

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Quick usage

1. Configure settings

   • Select your desired PIN length (4–9 digits; recommended 9 digits)
   • Click "Generate access card"

2. Export your cards

   • Download as PDF for digital storage
   • Print directly for physical cards

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Technical details

Technologies used

• HTML5: Core structure and layout
• CSS3: Modern styling with gradient backgrounds
• JavaScript: Application logic and card generation
• QRCode.js: QR code generation library (embedded)
• jsPDF: PDF generation library (embedded)

Security implementation

The application implements multiple layers of security:

Content-Security-Policy:
  - default-src 'none'
  - script-src 'self' [specific hashes]
  - No external resource loading
  - No form submissions
  - No iframe embedding

Privacy and data protection

This application is designed with privacy as a priority:

• No data storage: Nothing is saved to servers
• No cookies: No tracking or session data
• No analytics: Complete privacy, no usage tracking
• No external requests: All resources are self-contained
• Local processing: Everything happens in your browser

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License

access-card-generator is dual-licensed:

• LGPL-3.0 for open-source projects and proprietary projects that comply with LGPL requirements
• Commercial license for projects that require a proprietary license without LGPL obligations (see COMMERCIAL.md for details)

For commercial inquiries, contact: contact@cryptnox.com