Prepaid Chip Card Offline Transaction Exception Handling

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Solution Overview

Problem

Prepaid cards face challenges in offline transactions, where exceptions such as incomplete or unrecorded transactions can occur due to communication failures or errors, leading to difficulties for financial institutions in fraud detection and tracking transaction history.

Innovation Solution

A portable consumer device with a memory element that maintains separate records for initiated and completed transactions, using an accumulator record to track all transactions and an exception record to correct errors, allowing the financial institution to reconstruct transaction events and prevent fraud.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If prepaid cards conduct offline transactions without communicating with the financial institution, then transaction speed increases and costs are reduced, but fraud detection capability deteriorates and transaction tracking reliability worsens

Engineering Contradiction:

Improvetransaction speedVSAvoidfraud detection capability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary actions by having the portable device increment the accumulator record at the start of offline transactions and the exception record at completion, preparing data in advance so that when online communication is restored, the financial institution can immediately detect and analyze exceptions without losing fraud detection capability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by comparing the accumulator record and exception record when online communication is reestablished. This feedback mechanism allows the financial institution to identify discrepancies, detect potential fraud, and reconcile transaction histories even after multiple offline transactions occurred

Inventive Principle:

Principle #23Feedback

2Ease of operation

If the counter is reset to zero upon reloading the prepaid card, then the card appears to have spent no funds, but transaction history accuracy is lost and exception tracking deteriorates

Engineering Contradiction:

Improvecard usabilityVSAvoidtransaction history accuracy

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The system segments the transaction tracking into two separate records: the accumulator record that tracks all initiated transactions and the exception record that tracks completed transactions. This segmentation allows the card to be reloaded and the counter reset for usability purposes while preserving complete transaction history in the accumulator record for accurate tracking and exception detection

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The accumulator record serves as an intermediary that preserves the complete transaction history even when the counter is reset. This intermediary record allows the system to maintain accuracy in transaction tracking and exception detection while still enabling convenient card reloading and reset operations

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11238437B2Prepaid chip card exception processing

Publication Date: 2022.02.01 VISA INTERNATIONAL SERVICE ASSOCIATION

AI summary

A portable consumer device may have money stored therein, which can be calculated using an accumulator record and an exception record. The accumulator record can be incremented by the amount of any initiated transaction using the portable consumer device. The exception record can be incremented by the amount of any completed transaction using the portable consumer device. The portable consumer device may also have a limit amount, to record the amount of money added. The records allow for a later reconstruction of the device history, and can account for any errors or problems during transactions.