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The Advanced Card Security Checker is a browser extension designed to analyze the security features of credit cards. It allows users to input a credit card number and receive a detailed security analysis, including information about the card's brand, issuer, and various security features such as Verified by Visa (VBV), Mastercard SecureCode, and more. To use the app, users simply need to install the extension from the Chrome Web Store or manually load it in developer mode. Once installed, they can click the extension icon in the Chrome toolbar, enter a credit card number, and click the "Analyze Card Security" button. The app will automatically format the card number, validate it, and provide a comprehensive analysis of its security features, risk assessment, and recommendations. The app is built using modern web technologies, including HTML, CSS, and JavaScript, and utilizes the Gulp task runner for build automation. It employs the Luhn algorithm for card number validation and includes a user-friendly interface with real-time feedback on card input. The extension also tracks the number of cards analyzed and provides a help modal for user guidance. Key features of the Advanced Card Security Checker include: - Real-time card number formatting and validation. - Detailed security analysis with a breakdown of security features and risk levels. - Support for multiple card brands, including Visa, Mastercard, American Express, and Discover. - Local processing of card data, ensuring user privacy and security. - A built-in help system for user assistance and troubleshooting. - Statistics tracking to monitor the number of cards analyzed. Overall, the Advanced Card Security Checker serves as an educational tool for users to understand the security features of their credit cards and make informed decisions regarding their financial safety.