Digital Watermark Authentication in Mobile Accessories

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Solution Overview

Problem

Existing methods for delivering content to mobile telecommunication devices lack secure and tamper-proof mechanisms for ensuring the authenticity and integrity of the content, particularly when integrated with physical accessories like protective covers.

Innovation Solution

A method involving a cryptographically unique digital watermark, stored in a radio module integrated into an accessory, which is coupled with the mobile device, allowing for secure authentication and access to associated content stored on a server or database, utilizing NFC or RFID technology and blockchain for authentication and protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If digital content is integrated into a physical accessory using NFC or RFID tags, then content delivery to mobile devices is enabled, but security and tamper-proof mechanisms for ensuring content authenticity and integrity are lacking

Engineering Contradiction:
Improvecontent authenticity and integrityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent embeds a digital watermark (NFT) within the physical accessory structure, creating a nested authentication system where the watermark is contained within the accessory's radio module. This nested approach enables secure content delivery without requiring complex external verification systems, as the authentication data is inherently integrated into the physical object itself.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent introduces a digital watermark as an intermediary element between the physical accessory and the mobile device. This watermark acts as a mediator that carries authentication information, enabling secure content delivery while keeping the system architecture relatively simple. The watermark serves as the intermediate layer that bridges the physical and digital domains without requiring direct complex communication protocols.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a digital watermark is stored in a radio module of an accessory, then secure authentication is achieved, but the accessory requires specialized components increasing manufacturing complexity

Engineering Contradiction:
Improveauthentication securityVSAvoidaccessory manufacturing
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent uses a digital watermark as a copyable representation of authentication data that can be replicated within the radio module. Instead of requiring complex cryptographic hardware, the system uses a simplified digital copy (the watermark) that contains the essential authentication information. This approach maintains security while significantly reducing manufacturing complexity, as the watermark can be embedded using standard digital fabrication processes.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent employs a lightweight digital watermark structure that can be implemented using inexpensive radio frequency components. The watermark itself is a minimal data structure that requires no complex processing or expensive materials, making the accessory manufacturable at scale with standard components. The focus is on the information content rather than the physical complexity of the storage medium.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Ease of operation

If NFC or RFID technology is used for content delivery, then wireless communication is enabled, but the system lacks cryptographic uniqueness and indivisibility for secure authentication

Engineering Contradiction:
Improvewireless content deliveryVSAvoidcryptographic authentication
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent introduces an asymmetric cryptographic structure through the digital watermark (NFT), where the authentication data has unique properties that cannot be replicated or divided. The watermark contains cryptographic elements that are mathematically unique and indivisible, providing strong authentication while maintaining the ease of wireless NFC/RFID communication. This asymmetric approach allows simple wireless interaction with strong cryptographic security.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent pre-embeds the digital watermark (NFT) into the accessory during manufacturing, performing the cryptographic authentication setup in advance. This preliminary action ensures that when the accessory communicates with the mobile device via NFC or RFID, the authentication is already established and verified. The cryptographic uniqueness is built-in before use, eliminating the need for complex runtime authentication protocols while maintaining ease of operation.

Inventive Principle:
Principle #10Preliminary action

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

Ensures secure and tamper-proof delivery of content, enabling authorized access and maintaining the integrity of the content, with the digital watermark acting as a certificate of authenticity and authorization, enhancing the functionality of the mobile device and its applications.

Implementation Method 1

coupling the mobile telecommunication device with a radio module integrated into an accessory

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS12131208B2Method for providing content associated with a digital watermark on a mobile telecommunication device
Publication Date: 2024.10.29 DR ING H C F PORSCHE AG

AI summary

A method for providing content associated with a digital watermark on a mobile telecommunication device. The method includes coupling the mobile telecommunication device with a radio module integrated into an accessory mountable to the mobile telecommunication device and associated with the digital watermark. The digital watermark is a cryptographically unique and indivisible digital watermark. The method includes reading the digital watermark from the accessory and providing content associated with the digital watermark on the mobile telecommunication device. Further provided is an accessory for a mobile telecommunication device, which accessory includes a radio module associated with a digital watermark.