Two-Dimensional Code Verification Picture Integration
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Solution Overview
Problem
Current two-dimensional codes are vulnerable to replacement, making it difficult for merchants to detect unauthorized alterations, leading to potential financial losses.
Innovation Solution
A method and device that integrate a verification picture within the two-dimensional code, ensuring a unique correspondence with the main body, allowing users to visually verify authenticity and enabling server-based verification to detect unauthorized alterations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional two-dimensional code with a logo region is used, then the code can store information and be scanned, but it is difficult to detect unauthorized replacement because others can customize the logo region to match the merchant's code
Solution Approach 1:
The patent divides the verification mechanism into two independent parts: the main body of the two-dimensional code and the verification picture. The verification picture is a separate component that is displayed alongside the code, containing unique visual features that are difficult to replicate. This segmentation allows the verification picture to be independently checked against the main body, enabling detection of unauthorized replacements without complicating the code structure itself.
Solution Approach 2:
The verification picture is generated and bound to the specific two-dimensional code in advance, before the code is printed or displayed. This preliminary binding creates a unique correspondence between the code and its verification picture, allowing users to perform visual verification at the point of use. The verification features are predetermined and embedded, enabling immediate detection of tampering without requiring complex real-time analysis.
2Reliability
If the verification picture is integrated with the main body of the two-dimensional code, then unauthorized alterations can be detected, but the complexity of generating and verifying the code increases
Solution Approach 1:
The verification picture contains a simplified representation or copy of key identifying features from the main body of the two-dimensional code. Instead of embedding the entire complex code structure within the verification picture, the patent uses a copied or referenced version of essential visual elements. This approach maintains the unique correspondence between code and verification picture while significantly simplifying the generation process, as the verification picture can be created using standard image processing techniques rather than complex code encoding.
3Measurement precision
If a unique correspondence mechanism is implemented between the verification picture and the main body, then replacement detection is enabled, but the time and resources required for verification increase
Solution Approach 1:
The verification picture incorporates distinct visual characteristics such as specific color schemes, patterns, or visual features that are easily distinguishable and can be quickly compared. These visual changes provide immediate cues for verification, allowing users to assess authenticity at a glance rather than requiring detailed analysis. The use of distinctive visual properties accelerates the verification process while maintaining high detection accuracy.
Data Source
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AI summary
The present application provides a method and device for providing and verifying a two-dimensional code. The method for providing the two-dimensional code comprises receiving a two-dimensional code generation request from a terminal of a first user, the request comprising service data corresponding to the two-dimensional code, the service data comprising a user identifier of the first user; acquiring a first picture to correspond to the user identifier, the first picture being a picture identifiable by naked eyes; storing an association relationship between the user identifier and the first picture; generating a two-dimensional code based on the first picture and the service data; and providing the two-dimensional code and the first picture to the first user.