Transaction Security via Environmental Image Analysis

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Solution Overview

Problem

Existing methods for securing sensitive information entry on digital devices are inadequate as they fail to prevent spying through techniques like shoulder surfing and do not effectively account for the user's environment, leading to potential data theft.

Innovation Solution

A method that uses image pickup devices and sensors to analyze the user's environment, detecting faces and radio environment changes to determine if the entry of sensitive data is secure, and modifies the transaction context by alerting the user or hiding the screen if the environment is deemed insecure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a privacy film is used to secure the screen, then viewing angle security is improved, but screen brightness is reduced and usability complexity increases

Engineering Contradiction:

Improvescreen viewing securityVSAvoidscreen brightness

Core Design Contradiction:

ReliabilityVSIllumination intensity

Solution Approach 1:

The patent replaces the mechanical/optical privacy film system with an electronic/image processing-based solution. The system uses image pickup devices to capture the user's environment and processes these images to detect potential spying situations, substituting physical optical restrictions with digital analysis and contextual awareness mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Difficulty of detecting and measuring

If environment analysis is added to detect spying risks, then security detection capability is improved, but device complexity increases

Engineering Contradiction:

Improvespying risk detectionVSAvoidsystem complexity

Core Design Contradiction:

Difficulty of detecting and measuringVSDevice complexity

Solution Approach 1:

The patent makes the image pickup device serve multiple functions: it captures images for both the primary application (e.g., payment interface) and security analysis simultaneously. The same hardware resource is utilized for dual purposes, avoiding the need for separate dedicated spying detection cameras or sensors, thereby reducing overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the security analysis functionality with the existing application's image processing pipeline. The environment analysis is integrated into the transaction processing flow, merging multiple functions (transaction handling, image capture, and security detection) into a unified system rather than adding separate independent subsystems.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If the transaction context is modified based on environment analysis, then security response capability is improved, but processing time increases

Engineering Contradiction:

Improvesecurity responseVSAvoidtransaction processing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent performs environment analysis continuously or periodically during the transaction process, so that when a spying risk is detected, the system can immediately respond without needing to initiate a separate analysis phase. The security context is prepared in advance, allowing rapid modification of transaction behavior when threats are identified.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250104065A1Method for processing a transaction, system and corresponding program

Publication Date: 2025.03.27 WORLDLINE SA(FR)

AI summary

A method for processing a transaction of the type in which a user supplies a sensitive data item on a digital terminal. Such a method includes: initiating, using the digital terminal, a transaction requiring the input of the sensitive data item; after the initiation, obtaining, by using an image capture device connected to the terminal, a multimedia data item representative of an environment of the user; analyzing the multimedia data item previously obtained; and modifying a context for implementing the transaction when the analyzing the multimedia data item outputs a result that is representative of a non-secure environment.