Payment Terminal Storage Access Blocking for Data Integrity

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Solution Overview

Problem

Existing electronic payment terminals with removable storage modules in unsecured areas are vulnerable to data integrity risks and fraudulent access, particularly for tax data, due to the lack of effective protection mechanisms.

Innovation Solution

Implementing a combination of removable blocking devices and an authentication device to secure access to the removable storage module, requiring destruction of the authentication device for access, thus ensuring data integrity and facilitating quick identification of fraudulent attempts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the removable storage module is placed in an unsecured area to allow easy replacement, then the ease of operation is improved, but the data integrity and security are worsened

Engineering Contradiction:

Improveease of replacementVSAvoiddata integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The storage module is divided into two separate components: a removable storage unit and a fixed blocking device. The blocking device remains installed in the terminal while the storage module can be removed and replaced. This segmentation allows the storage module to be easily replaced while the blocking device maintains security through its fixed installation and authentication mechanism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The blocking device acts as an intermediary between the unsecured storage module and the secured terminal. It includes an authentication device that must be destroyed to access the storage module, creating a controlled interface that maintains security while allowing legitimate access when needed.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the storage module is made removable for regulation compliance, then the adaptability is improved, but the vulnerability to fraudulent access increases

Engineering Contradiction:

Improveregulation complianceVSAvoidfraudulent access

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The blocking device is installed in advance to prevent fraudulent access before it can occur. The authentication device on the blocking device must be destroyed to access the storage module, creating a preliminary barrier that counteracts potential fraudulent attempts while still allowing legitimate access when the authentication device is properly destroyed.

Inventive Principle:

Principle #9Preliminary anti-action

3Reliability

If the authentication device requires destruction for access, then the data protection is improved, but the ease of operation for legitimate access is worsened

Engineering Contradiction:

Improvedata protectionVSAvoidaccess complexity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The blocking device is pre-installed with the authentication mechanism in place before any access is needed. This preliminary setup ensures that data protection is automatically enforced without requiring additional steps during normal operation, while still allowing legitimate access when the authentication device is properly destroyed according to protocol.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4133440B1Electronic payment device with means for blocking access to a data storage module

Publication Date: 2026.02.11 BANKS & ACQUIRERS INT HLDG SAS

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AI summary

The present invention relates to an electronic payment terminal (1) comprising a box (10) having a housing (11) inside which a first removable module (12) for storing data related to at least one transaction carried out via the terminal (1) is arranged, the terminal (1) also having removable means (13, 14, 15) for blocking access to the first storage module (12) and an authenticity device (16) covering at least one portion of the removable means (13, 14, 15) for blocking access to the first storage module (12).