Document Security Features Using Invisible Ink and UV Detection

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Solution Overview

Problem

Physical documents are vulnerable to counterfeiting, illegal reproduction, alteration, and theft due to advancements in imaging and reproduction technology, making it difficult to authenticate and track their legitimacy.

Innovation Solution

Incorporating a unique identifier and an invisible code on documents using specialized ink that becomes visible under specific conditions, along with a computer-readable code, to ensure authenticity and traceability, which can be read using appropriate devices, and storing this information in a secure database for tracking purposes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional visible security features are used on documents, then authentication is possible, but the features can be easily reproduced by imaging technology

Engineering Contradiction:
Improvedocument authenticationVSAvoidcounterfeiting vulnerability
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies invisible ink that changes color or becomes visible only under specific conditions (such as UV light or chemical reaction). This allows security features to be authenticated reliably while remaining invisible to standard imaging and reproduction technologies, thus preventing counterfeiting

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent utilizes materials whose optical or chemical parameters change under specific conditions. The invisible ink remains invisible under normal conditions but reveals security information when exposed to specific wavelengths of light or chemical agents, creating a reliable authentication mechanism that cannot be easily reproduced

Inventive Principle:
Principle #35Parameter changes

2Reliability

If invisible code is added to documents, then traceability is improved, but the complexity of reading and verifying the code increases

Engineering Contradiction:
Improvedocument traceabilityVSAvoidreading device complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a specialized reading device that acts as an intermediary between the invisible code and the verification system. This device contains the necessary UV lights, chemical agents, or optical sensors to reveal and read the invisible code, simplifying the verification process while maintaining high traceability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex mechanical verification methods with optical or chemical detection systems. The invisible code can be read using UV lights or chemical reactions rather than physical inspection, reducing the complexity of the verification process while improving traceability

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

3Reliability

If multiple security features are incorporated in documents, then security is enhanced, but the manufacturing process becomes more complex

Engineering Contradiction:
Improvedocument securityVSAvoidmanufacturing process simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple security features into a single integrated system. The unique identifier, invisible code, and security features are all incorporated into one document during the manufacturing process, enhancing security while maintaining manufacturing simplicity through consolidation rather than multiple separate steps

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution effectively identifies and verifies the authenticity of documents, prevents counterfeiting, and allows for secure tracking throughout the document's lifecycle, enhancing security and trust in documents such as collectibles, identification documents, and government records.

Implementation Method 1

The invisible code can be a code applied to a document using an 'invisible' ink, such as an ink that fluoresces, phosphoresces, illuminates, or otherwise becomes visible upon interrogation with an appropriate signal

Methodology Applied
Scientific EffectFluorescence: Fluorescence

Implementation Method 2

The invisible code can be a code applied to a document using an 'invisible' ink, such as an ink that fluoresces, phosphoresces, illuminates, or otherwise becomes visible upon interrogation with an appropriate signal

Methodology Applied
Scientific EffectPhosphorescence: Phosphorescence

Data Source

PatentUS10572705B2Secure and traceable security features for documents
Publication Date: 2020.02.25 US POSTAL SERVICE
  • US10572705B2 patent drawing
  • US10572705B2 patent drawing
  • US10572705B2 patent drawing

AI summary

A system for providing document authenticity, securing, and tracing includes a mark, an invisible code and a serial number. A user desiring to create a secure, verifiable document can receive one or more codes or indicia to put on the physical document.