Loyalty Identifier Mapping With Pseudonymous Retailer IDs

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Solution Overview

Problem

Existing customer loyalty systems, both physical and virtual, require users to manually manage multiple loyalty programs by providing specific identifiers or membership numbers, which is cumbersome and inefficient, and lack a unified solution that simplifies user experience while being cost-effective for merchants.

Innovation Solution

A centralized loyalty identifier management system that generates a general loyalty identifier for a user, associating it with various specific loyalty programs, allowing users to manage their loyalty benefits through a single identifier, which can be updated and accessed seamlessly across different merchants.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single loyalty identifier is used across multiple retailers, then customer convenience is improved, but security and control over personal data deteriorate

Engineering Contradiction:
Improvecustomer convenienceVSAvoidsecurity and control
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system segments the centralized loyalty identifier into multiple distributed pseudonymous identifiers, each retailer receiving only the pseudonym they need. The mapping between real identity and pseudonyms is segmented across multiple trusted authorities rather than held in a single centralized database, thus improving security while maintaining convenience.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces pseudonymous identifiers as intermediaries between the customer's real identity and the retailers' loyalty systems. These pseudonyms act as mediators that enable cross-retailer recognition without exposing the customer's actual identity or allowing any single retailer to control the entire loyalty ecosystem.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If multiple loyalty identifiers are used across different retailers, then security and control are improved, but customer convenience deteriorates

Engineering Contradiction:
Improvesecurity and controlVSAvoidcustomer convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent creates a universal pseudonymous identifier system that serves multiple functions: it works across different retailers, maintains security through distributed control, and provides a consistent user experience. The same pseudonym can be used at any participating retailer, giving the system multi-functional capability that addresses both security and convenience requirements.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of manufacture

If personal data is centralized in one database, then ease of management is improved, but vulnerability to breaches and loss of control deteriorates

Engineering Contradiction:
Improveease of managementVSAvoidvulnerability to breaches
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The centralized personal data database is segmented into multiple distributed trusted authority databases. Each authority holds only a portion of the mapping information needed to connect real identities to pseudonyms. This segmentation maintains ease of management through standardized protocols while dramatically reducing vulnerability to breaches, as compromising one database does not expose the entire system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements local quality by allowing each trusted authority to independently manage its own segment of the identifier mapping with specific security characteristics. Each local database can be optimized for its specific security requirements while still contributing to the overall system functionality, thus managing data securely without requiring a single centralized vulnerable point.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP3639235B1Method for managing loyalty identifiers, method for processing loyalty data, server, transaction device and corresponding programs
Publication Date: 2026.05.20 BANKS & ACQUIRERS INT HLDG SAS
  • EP3639235B1 patent drawingFigure 1
  • EP3639235B1 patent drawingFigure 2
  • EP3639235B1 patent drawingFigure 3

AI summary

The proposed technique relates to a method for managing loyalty identifiers, which method is implemented in a loyalty identifiers management server (SIF) and comprises an initialisation phase comprising a step (11) of generating a general loyalty identifier (ID_Gen_U1) for a previously identified user (U1). The proposed technique also relates to a method for processing loyalty data, which method is implemented in a transaction device of a merchant.