Portable Terminal Authentication Using Delayed Location Profiles

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Solution Overview

Problem

Existing authentication methods for mobile devices are either insecure or technically complex, often relying on user input prone to errors or requiring additional hardware, which can lead to unauthorized access and identity theft.

Innovation Solution

A method that authenticates a portable terminal by storing location data with a time delay, extracting characteristic features from this data using an extraction logic, and comparing it with immediate pre-authentication data to verify the device's legitimacy based on its movement profile.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional authentication methods (PIN, password, smart card) are used, then user identity can be verified, but the system becomes vulnerable to identity theft and access errors when devices are lost or stolen

Engineering Contradiction:
Improveauthentication securityVSAvoididentity theft risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary actions by continuously collecting and storing location data in advance before authentication is needed. This historical location information is then used during authentication to verify the device's legitimacy, eliminating the need for traditional vulnerable authentication methods while maintaining high security.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces location data as an intermediary element between the user and the authentication system. Instead of directly using passwords or PINs that can be stolen, the system uses location history as a mediator to verify device ownership, making it much harder for thieves to impersonate users even with physical access to the device.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If extensive hardware such as card readers is used for authentication, then authentication reliability improves, but device complexity and technical requirements increase

Engineering Contradiction:
Improveauthentication reliabilityVSAvoidhardware requirements
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces mechanical authentication hardware (card readers, smart card readers) with a software-based location analysis system. The authentication is performed by comparing location data patterns through algorithmic processing, eliminating the need for additional physical hardware while maintaining or improving authentication reliability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The location data collection system serves multiple functions: it continuously tracks device location for security purposes, provides authentication verification, and can potentially be used for other services. This multi-functionality eliminates the need for separate dedicated authentication hardware, reducing overall device complexity.

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

3Measurement precision

If users must provide extensive authentication data manually, then authentication accuracy can be improved, but user convenience and ease of operation decrease

Engineering Contradiction:
Improveauthentication accuracyVSAvoiduser convenience
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The system implements self-service by automatically collecting, storing, and analyzing location data without requiring any manual user input during authentication. The device itself generates the authentication evidence through its movement patterns, eliminating the need for users to manually enter passwords or remember authentication data while maintaining high accuracy.

Inventive Principle:
Principle #25Self-service

4Reliability

If location data is collected continuously for authentication, then authentication security improves, but energy consumption and data storage requirements increase

Engineering Contradiction:
Improveauthentication securityVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system extracts only the essential authentication-critical information from continuous location data - specifically, the characteristic location patterns and movement profiles. Rather than storing and processing all raw location data continuously, it extracts and stores only the relevant authentication features, significantly reducing energy consumption and storage requirements while maintaining security.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP3472744B1Authenticating a portable terminal device
Publication Date: 2025.09.17 GIESECKE & DEVRIENT EPAYMENTS GMBH
  • EP3472744B1 patent drawingFigure 1
  • EP3472744B1 patent drawingFigure 2
  • EP3472744B1 patent drawingFigure 3

AI summary

The invention relates to a method for authenticating a portable terminal device, together with a correspondingly designed authentication system. The invention further relates to a computer program product having control commands, which are designed to implement the method according to the invention and to operate the authentication system. The invention makes it possible to carry out, with a high level of user friendliness, an examination of whether a specified identity of a mobile terminal device is actually present.