Optical Microtransponder Authentication for Durable Minimal-Area Markings

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Solution Overview

Problem

Existing security markings, such as QR codes, RFID tags, and holograms, occupy significant surface area and are not durable, making them less attractive for tagging smaller objects, and require multiple angles for verification, which is time-consuming.

Innovation Solution

Utilization of miniature microtransponders (MTPs) with integrated circuits and optimized clock recovery circuits for enhanced signal transmission and processing, allowing for durable self-destructive security inlays and integration with blockchain technology for secure document smart contracts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If QR codes, RFID tags, and holograms are used for security markings, then authentication capability is provided, but surface area occupied is significant and durability is poor

Engineering Contradiction:

Improveauthentication capabilityVSAvoidsurface area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent divides the authentication function into multiple components: a microtransponder chip containing identification data, an optical coupling mechanism for light-based communication, and a reader system. This segmentation allows the core authentication element to be miniaturized while maintaining functionality through distributed components.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces traditional mechanical/optical security features (QR codes requiring visual inspection, holograms requiring angled viewing) with an optical coupling system that uses light to transmit data wirelessly. This substitution eliminates the need for physical surface area and multiple viewing angles, enabling authentication through optical field interaction.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If QR codes, RFID tags, and holograms are used for security markings, then authentication capability is provided, but multiple angles are required for verification which is time-consuming

Engineering Contradiction:

Improveauthentication capabilityVSAvoidverification time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical/optical inspection process (requiring physical viewing at multiple angles) with an optical coupling system that transmits data wirelessly through light. The reader system can authenticate the microtransponder from a distance without requiring the user to physically rotate or angle the object, dramatically reducing verification time.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an optical coupling mechanism as an intermediary between the microtransponder and the reader system. This intermediary enables wireless optical communication that can penetrate or around physical obstacles, allowing authentication without direct line-of-sight or angle-dependent viewing, thus eliminating verification time losses.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If existing security markings are used, then authentication is provided, but they are not durable for long-term tracking

Engineering Contradiction:

Improveauthentication capabilityVSAvoiddurability

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent changes the physical state and environmental parameters of the security marking by embedding the microtransponder within a protective substrate or coating. This modification protects the chip from physical damage, moisture, and degradation, extending its operational lifespan while maintaining optical coupling functionality for long-term tracking.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite material structures combining the microtransponder chip with protective substrates, adhesives, and environmental barriers. This composite approach creates a durable assembly that maintains authentication capability under various environmental conditions (temperature, humidity, mechanical stress) throughout the product's lifecycle.

Inventive Principle:

Principle #40Composite materials

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

MTPs provide robust authentication with minimal surface area, durable self-destructive functionality, and secure document management, enhancing object tracking and ownership verification with improved read distances and simplified processing.

Implementation Method 1

light-triggered transponders (MTPs) that have been shown to be stable under physiological conditions

Methodology Applied

Scientific EffectPhotoelectric Effect: Photoelectric Effect

Implementation Method 2

optimized clock recovery circuits for enhanced signal transmission and processing

Methodology Applied

Scientific EffectSignal Processing:

Data Source

PatentUS12382293B2Devices, systems, and methods using microtransponders

Publication Date: 2025.08.05 P CHIP IP HOLDINGS INC

AI summary

An object may include at least one microtransponder (MTP) configured with an identifier. The identifier of the MTP may be indexed to the object. Indexing information associated with the MTP and the object may be stored in a database of a security system. The MTP may be read, and data reported by the MTP may be processed to determine authenticity of the object.