Digital Watermarking Identification Document Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current digital watermarking technologies for identification documents lack robustness in authenticating the source and holder information, as they often rely on single modulation patterns that can be vulnerable to tampering and forgery.
Innovation Solution
The method involves modulating spatial luminance and chrominance patterns to encode personally identifiable information, with correlatable portions to enhance security, using a combination of digital watermarks applied to identification documents to authenticate both the source and holder, and validate the document's authenticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single modulation pattern is used for digital watermarking, then the implementation is simpler, but the security and robustness against tampering is reduced
Solution Approach 1:
The patent divides the digital watermarking system into multiple independent modulation patterns (e.g., luminance modulation, chrominance modulation, spatial frequency modulation). Each pattern encodes a portion of the personally identifiable information separately, allowing the system to achieve high security through multiple layers while maintaining manageable complexity by treating each pattern as a modular component.
Solution Approach 2:
The patent combines multiple modulation patterns to create a composite digital watermarking system. By overlaying different modulation patterns (luminance, chrominance, spatial frequency) on the identification document, the system achieves enhanced security and robustness similar to composite materials, where the whole is stronger than the sum of its individual parts.
2Reliability
If multiple modulation patterns are used to encode information, then the security and tamper-proof capability is enhanced, but the system complexity increases
Solution Approach 1:
The patent segments the personally identifiable information into multiple portions, with each portion encoded by a different modulation pattern. This segmentation allows the system to distribute the security burden across multiple simpler components rather than requiring one complex encoding system, thereby enhancing overall security while managing complexity.
Solution Approach 2:
The patent designs the modulation patterns to be multi-functional: they simultaneously encode information, provide authentication, and enable tamper detection. Each pattern serves multiple purposes within the security framework, reducing the need for additional separate systems and thereby managing complexity while enhancing security.
3Measurement precision
If correlatable portions of information are encoded across multiple watermarks, then the ability to validate document authenticity is improved, but the data processing complexity increases
Solution Approach 1:
The patent incorporates correlatable portions of information across multiple watermarks that can be cross-validated. The system uses feedback mechanisms where the extracted information from one modulation pattern is used to verify the information from other patterns, ensuring high validation accuracy while managing processing complexity through systematic verification protocols.
Data Source
AI summary
Some implementations may provide a method that includes: receiving, at a mobile device, data encoding a first digital watermark present on the identification document; extracting a first portion of personally identifiable information encoded by a spatial luminance pattern associated with the first digital watermark; receiving, at a mobile device, data encoding a second digital watermark present on the identification document; extracting a second portion of personally identifiable information encoded by a spatial luminance pattern associated with the first digital watermark; and validating the identification document based on at least one of the first portion of personally identifiable information or the second portion of personally identifiable information.