Color Pixel Payment Codes for One-Time Security

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Solution Overview

Problem

Existing payment methods using credit cards and QR/bar codes are vulnerable to illegal use due to disclosure of information and potential hacking, lacking robust security measures.

Innovation Solution

A payment method utilizing a one-time payment security code generated from color pixel codes, which is displayed on a color grid image, allowing users to input a pattern to select pixels, and dynamically changing block arrangements to enhance security and prevent unauthorized use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If credit card information is disclosed for payment, then payment can be processed, but the information can be illegally used by others

Engineering Contradiction:

Improvepayment processingVSAvoidpayment security

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies dynamics by making the payment code changeable and time-limited. The code is not static but dynamically generated and expires after use, preventing reuse by unauthorized parties while maintaining ease of payment processing.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The payment code is designed as a disposable, single-use element. After being used once, the code becomes invalid and cannot be reused, similar to a disposable security token. This ensures that even if the code is disclosed, it cannot be illegally used multiple times.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Ease of operation

If QR code or bar code is used for payment information, then payment can be displayed, but the information can be photographed and restored using hacking programs

Engineering Contradiction:

Improvepayment information displayVSAvoidillegal photography and restoration

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The payment code changes dynamically over time and cannot be captured in a static image. Since the code is time-limited and changing, photographing it does not provide a permanent usable copy, as the code will have changed by the time it is read.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The code is designed to be single-use and time-sensitive. Once displayed and read, the code expires and becomes invalid, preventing any subsequent use including restoration from photographs.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Reliability

If a dedicated application is required to read changed QR code blocks, then security is improved, but user convenience is reduced

Engineering Contradiction:

ImproveQR code securityVSAvoiduser convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent makes the payment system universally compatible with standard smartphones and payment terminals without requiring dedicated applications. The changing code can be read by any device with a camera and basic processing capability, maintaining both security and user convenience.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP3905167B1Payment method using one-time payment security code based on color pixel code

Publication Date: 2025.09.17 PARK HEE YOUNG

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AI summary

Provided is a payment method using a one-time payment security code based on a color pixel code. In the payment method, arbitrary color pixel codes are first disposed on a color grid image screen that is formed with color pixels of various colors in a smartphone-dedicated application, a user inputs a user pattern to select color pixels, a one-time payment security code is generated by combining the color pixel codes and the user pattern, and the one-time payment security code is utilized as information for paying for the user's purchase of a product or a service.