Modular Contactless Card Reader for Unauthorized Use Prevention

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Solution Overview

Problem

Existing EFTPOS terminals lack a modular architecture that allows for flexible implementation of card reading and card holder authentication without requiring additional compliance testing, and existing security measures for contactless card transactions are cumbersome and prone to unauthorized access.

Innovation Solution

A modular EFTPOS terminal design comprising a card reading interface module and a card holder authentication module, each certified to relevant security standards, with encryption and authentication methods to enhance security and flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If EFTPOS terminals use a non-modular architecture with integrated card reading and authentication functions, then the system maintains unified security compliance, but the terminal requires additional compliance testing and recertification when any component is updated

Engineering Contradiction:

Improvesecurity complianceVSAvoidrecertification complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The EFTPOS terminal is divided into separate modular components: a card reading interface module and a card holder authentication module. Each module can be independently certified against relevant security standards, allowing updates to individual modules without requiring recertification of the entire terminal. This segmentation resolves the contradiction by maintaining security compliance through separate certifications while reducing recertification complexity when components are updated.

Inventive Principle:

Principle #1Segmentation

2Reliability

If EFTPOS terminals use a non-modular architecture, then the system ensures comprehensive security coverage, but it is difficult to configure for different merchant needs

Engineering Contradiction:

Improvesecurity coverageVSAvoidmerchant configuration flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

By separating the terminal into independent modules (card reading interface module and card holder authentication module), each module can be selectively implemented or configured based on specific merchant requirements. This allows flexible configuration while maintaining security coverage, as each module can be certified and deployed independently according to the merchant's needs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The modular architecture enables the terminal to serve multiple merchant configurations through universal module combinations. Different merchants can select and combine appropriate modules (e.g., contactless reading, magnetic stripe reading, various authentication methods) to create customized solutions while maintaining comprehensive security coverage through certified modules.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If EFTPOS terminals use touchless card reading technology, then payment speed and convenience are improved, but the system becomes more vulnerable to unauthorized access and eavesdropping

Engineering Contradiction:

Improvepayment speedVSAvoidunauthorized access vulnerability

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system separates card reading functionality from authentication functionality into distinct modules. The card reading interface module handles rapid data acquisition from touchless cards to maintain payment speed, while the card holder authentication module independently verifies cardholder identity and authorization. This segmentation allows fast touchless reading while preventing unauthorized access through separate authentication validation.

Inventive Principle:

Principle #1Segmentation

4Reliability

If EFTPOS terminals are updated as integrated units, then system-wide security is maintained, but update time and cost increase

Engineering Contradiction:

Improvesystem-wide securityVSAvoidrecertification time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The terminal is segmented into independently certifiable modules, each with its own security certification. When a module needs updating, only that specific module requires recertification rather than the entire terminal. This maintains system-wide security through certified components while significantly reducing update time and cost by isolating recertification requirements to individual modules.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12632869B2System and method to prevent unauthorized usage of card readers and modular electronic funds transfer point of sale device

Publication Date: 2026.05.19 STRIPE LLC

AI summary

A contactless card reader comprises a contactless card reader front-end coupled to a processor. A communications module is coupled to the processor and a set of sensors is coupled to the processor. The set of sensors determines parameters related to the location, orientation and motion of the card reader. The processor receives the parameters from the set of sensors and utilizes the parameters and scenario configuration data to evaluate a rule. The result of the evaluation of the rule results in a limitation on the operation of the card reader. The communications module is configured to intermittently receive the scenario configuration data from external sources.