Dynamic Security Code Generation for Card Fraud Prevention
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Solution Overview
Problem
Current security code systems for prepaid, debit, and credit cards are vulnerable to Card-Not-Present fraud, as static security codes can be stolen and reused, leading to increased fraudulent activities and costs associated with managing fraud cases and replacing counterfeit cards.
Innovation Solution
A Dynamic Security Code System that generates and updates security codes dynamically, either by a server or on-card algorithms, providing limited-use dynamic security code values that can be validated through existing payment card infrastructures, reducing the need for card replacement and infrastructure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static security codes are used on payment cards, then the card payment infrastructure remains simple and existing, but the system becomes vulnerable to Card-Not-Present fraud and requires card replacement when compromised
Solution Approach 1:
The patent implements dynamic security codes that change over time or after a certain number of uses, transforming the static security code into a dynamic one. This is achieved through an on-card algorithm that generates new security codes based on a secret key and counter, allowing the code to evolve without requiring physical card replacement or complex infrastructure changes
Solution Approach 2:
The security code parameter is changed dynamically through mathematical algorithms that generate new codes based on a secret key and counter value. This allows the security code to transform from a fixed value to a changing value, improving security while maintaining compatibility with existing card readers and payment systems
2Reliability
If time-based dynamic security codes with real-time clock and battery are implemented, then security is improved, but the card becomes more fragile, expensive, and has limited lifetime
Solution Approach 1:
The patent extracts and removes the battery and real-time clock components from the card, keeping only the essential algorithmic functionality. The security code generation is achieved through a purely mathematical process using a secret key and counter stored on the card, eliminating the need for power sources and time-keeping hardware
Solution Approach 2:
Instead of using expensive components like batteries and real-time clocks, the patent employs a simple algorithmic approach that generates dynamic security codes through mathematical operations. This creates a more durable, cheaper, and maintenance-free solution that doesn't rely on consumable components
3Reliability
If time-based dynamic security codes are implemented, then security is improved, but the system becomes prone to desynchronization with the server
Solution Approach 1:
The patent implements a feedback mechanism where the server validates the security code generated by the card and provides confirmation. The card and server both maintain the same secret key and counter, ensuring they generate identical security codes without requiring complex time synchronization. The counter increments with each use, providing automatic state synchronization through the transaction process itself
Data Source
AI summary
This invention is a comprehensive "Dynamic Security Code" ("DSC") System ("DSC System") that can change the security code of a prepaid, debit, or credit card ("Payment Card"). In an effort to thwart Card-Not-Present ("CNP") fraud, the DSC System provides dynamic security code values ("DSC Values") that have a limited use. The DSC Values provided by this DSC System can be calculated by various methodologies and can be used within existing standard payment card infrastructures. The DSC System can also be used with other form factors and in other environments not related to payments such as balance inquiries. The DSC Values can be calculated by a DSC Generator Server or on the card itself.