Authorization Control Network for Secure Transaction Limit Validation
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Solution Overview
Problem
Existing payment card authorization systems lack robust mechanisms to ensure that transaction limits are accurately enforced and securely updated, leading to potential security vulnerabilities.
Innovation Solution
An authorization control network and method that includes a limit profile database and computer servers to manage transaction limits, ensuring that authorization amounts do not exceed predefined limits and available credit, while securely updating these limits based on cardholder attributes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the card issuer uses traditional authorization systems to process transactions, then transaction processing can be completed, but security vulnerabilities exist due to lack of robust limit enforcement mechanisms
Solution Approach 1:
The system pre-establishes per-transaction limits and daily cumulative limits in the limit profile database before transactions occur. These limits are configured based on cardholder attributes and fraud threshold parameters, enabling proactive fraud prevention rather than reactive detection. The authorization server queries these pre-set limits during transaction processing to enforce them automatically.
Solution Approach 2:
The patent introduces an authorization server as an intermediary component between the point-of-sale device and the cardholder account. This server acts as a mediator that queries the limit profile database, validates authorization requests against per-transaction and daily cumulative limits, and enforces fraud threshold parameters. This intermediary layer adds robust security validation that traditional direct authorization systems lack.
2Reliability
If per-transaction limits and daily cumulative limits are enforced, then fraud risks are reduced, but system complexity increases due to additional validation requirements
Solution Approach 1:
The patent segments the authorization system into distinct functional components: the limit profile database storing per-transaction and daily cumulative limits, the authorization server performing validation logic, and the point-of-sale devices initiating transactions. This segmentation allows each component to have a specialized function, making the overall complex system manageable and maintainable through clear separation of concerns.
Solution Approach 2:
The limit profile database automatically stores and retrieves limit values without requiring manual intervention for each transaction. The authorization server automatically queries the database, compares authorization requests against stored limits, and enforces fraud thresholds without human oversight. This automation reduces operational complexity despite the enhanced validation logic.
3Measurement precision
If the system stores limit profiles in a database, then limit enforcement accuracy is improved, but data management complexity increases
Solution Approach 1:
The limit profile database serves multiple functions: storing per-transaction limits, storing daily cumulative limits, and maintaining fraud threshold parameters. This multi-functional database structure consolidates what could be separate data management systems into a single unified repository, reducing data management complexity while maintaining high validation accuracy through centralized control.
Data Source
AI summary
An authorization control network includes a limit profile database and at least one computer server. The server(s) receives an account identifier and a datum from a communications device, and associates the datum with the account identifier in a limit profile record of the limit profile database. The server(s) also receives the account identifier and a transaction limit, and associates the transaction limit with the account identifier in the limit profile record. The server(s) then receives from a POS device an authorization request that includes the account identifier and an authorization amount. If the server(s) confirms that the authorization amount does not exceed the transaction limit that is associated with the account identifier in the limit profile record and does not exceed an available credit limit that is associated with the account identifier, the server(s) transmits to the POS device an authorization response that confirms authorization of the authorization amount.