Mobile Device Interrogating NFC Card for Fraud Detection

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Solution Overview

Problem

Unauthorized transactions can occur with electronic NFC cards without the owner's awareness, leading to potential fraudulent 'ghost purchases' due to lack of real-time monitoring and authentication.

Innovation Solution

A consumer electronics device, such as a mobile phone, is equipped with a processor and NFC or Bluetooth transmitter to periodically send interrogation signals to an electronic transaction card, record responses, and transmit transaction histories to a server, enabling real-time monitoring and authentication of transactions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If electronic NFC cards are used for transactions, then convenience and speed of payment are improved, but security against unauthorized transactions deteriorates

Engineering Contradiction:

Improvetransaction speedVSAvoidtransaction security

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The system performs preliminary actions by continuously monitoring and recording e-card interrogations before actual transactions occur. The mobile device proactively detects unauthorized reading attempts and maintains a transaction log in advance, enabling preemptive security measures rather than reactive responses after fraud occurs.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where the mobile device receives notifications from the e-card about interrogations, compares them against authorized transactions, and provides real-time alerts to the user. This closed-loop feedback system continuously monitors transaction authenticity and enables immediate user response to potential fraud.

Inventive Principle:

Principle #23Feedback

2Reliability

If real-time monitoring of e-card transactions is implemented, then transaction security is improved, but device complexity increases

Engineering Contradiction:

Improvetransaction securityVSAvoidmonitoring system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The e-card system performs self-service by autonomously generating interrogation logs and transmitting them to the mobile device without requiring external monitoring infrastructure. The card itself manages its own transaction record-keeping and communication, reducing the complexity burden on the monitoring system.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The mobile device leverages its existing NFC transceiver and processor for multiple functions - both for contactless payments and for security monitoring. The same hardware components used for transaction processing are repurposed to detect and record unauthorized interrogations, eliminating the need for dedicated monitoring hardware.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If continuous interrogation signals are sent to e-card, then transaction detection accuracy is improved, but energy consumption increases

Engineering Contradiction:

Improvetransaction detection accuracyVSAvoidmobile device energy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

Instead of continuous monitoring, the system uses periodic interrogation signals sent at intervals or triggered by specific events. The mobile device polls the e-card at predetermined times or upon detecting relevant conditions, maintaining adequate monitoring coverage while significantly reducing energy consumption compared to continuous operation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system maintains continuous security monitoring capability through the e-card's own transaction logging function, which continuously records all interrogations locally. The mobile device then periodically retrieves this continuous log, combining the e-card's continuous recording with periodic retrieval to achieve both high detection accuracy and low energy consumption.

Inventive Principle:

Principle #20Continuity of useful action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution allows for immediate detection and alerting of unauthorized transactions, reducing the risk of fraud by providing the card owner with real-time information and enabling secure authorization of transactions through user input or biometric verification.

Implementation Method 1

Two general types of computer ecosystems exist: vertical and horizontal computer ecosystems. In the vertical approach, virtually all aspects of the ecosystem are owned and controlled by one company, and are specifically designed to seamlessly interact with one another. Horizontal ecosystems, one the other hand, integrate aspects such as hardware and software that are created by other entities into one unified ecosystem.

Methodology Applied

Scientific EffectNear field communication (NFC):

Implementation Method 2

a low energy Bluetooth transmitter may be included through the processor is programmed to send the interrogation signal

Methodology Applied

Scientific EffectLow energy Bluetooth:

Data Source

PatentUS9558488B2Customer's CE device interrogating customer's e-card for transaction information

Publication Date: 2017.01.31 SONY GROUP CORP

AI summary

A bank customer's electronic debit or credit card (“e-card”) is interrogated by the customer's CE device to report transaction information including interrogations the e-card receives from a point of sale (POS) apparatus.