Human Body Communication Authentication via Waveform Matching

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Solution Overview

Problem

Existing authentication methods using physical feature information are vulnerable to leakage and misuse, particularly when wearable devices are lost or stolen, as they rely on physical characteristics that can be compromised or replicated.

Innovation Solution

An electronic apparatus and method that utilizes human body communication to transmit and receive signals through the body, combining waveform information and key information for secure authentication, ensuring that only authorized users can access devices by matching both signal waveforms and authentication keys, thereby enhancing security and preventing unauthorized access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If physical feature information (fingerprint, iris, vein) is used for authentication, then user authentication capability is improved, but security risk increases due to potential leakage and replication of physical features

Engineering Contradiction:
Improveauthentication capabilityVSAvoidsecurity risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces human body communication as an intermediary medium for authentication. Instead of directly using physical features (fingerprint, iris, vein) that can be replicated or leaked, the system uses electrical signals transmitted through the body as a mediator. The authentication is based on the unique electrical characteristics of the body during signal transmission, which are much harder to replicate than physical features.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces mechanical/biological authentication systems (fingerprint scanners, iris cameras, vein readers) with an electrical field-based human body communication system. By substituting the mechanical detection of physical features with electrical signal transmission and analysis, the system achieves both authentication capability and enhanced security against replication attacks.

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

2Ease of operation

If wearable devices are used for authentication, then convenience is improved, but security risk increases when the device is lost or stolen

Engineering Contradiction:
Improveauthentication convenienceVSAvoidunauthorized access risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent makes the human body itself serve as the authentication medium rather than relying on external wearable devices. The body naturally conducts electrical signals and has unique electrical characteristics that can be used for authentication. This eliminates the need for separate wearable devices that could be lost or stolen, as the body itself becomes both the carrier and the authentication source.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The human body acts as an intermediary that combines the convenience of wearable devices with the security of biological features. The body naturally transmits and modifies electrical signals in a unique way, providing both ease of use (no separate device needed) and security (unique electrical characteristics).

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If physical feature information is shared with external apparatuses, then functionality and versatility are improved, but personal information leakage risk increases

Engineering Contradiction:
Improvecross-apparatus functionalityVSAvoidpersonal information leakage
Core Design Contradiction:
Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent extracts only the necessary authentication function from physical feature information by using electrical signal characteristics during human body communication. Instead of sharing actual physical feature data (fingerprint images, iris patterns, vein maps), the system extracts and uses only the electrical response characteristics of the body, which are functional for authentication but do not reveal sensitive personal information.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Electrical signals during human body communication serve as an intermediary that enables cross-apparatus functionality without exposing personal information. The signals transmit authentication data through the body's electrical characteristics without requiring the sharing or storage of sensitive physical feature information, thus maintaining versatility while preventing information leakage.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This approach provides a secure authentication method that reduces the risk of personal information leakage and misuse by using unique waveform information from the human body, ensuring that even if physical features change, the authentication remains secure, and unauthorized access is prevented.

Implementation Method 1

a communication interface (120), which makes contact with the user's body and receives a signal from an external apparatus through the user's body

Methodology Applied
Scientific EffectElectrical conduction through biological tissue: Conduction (electrical)

Data Source

PatentEP3535876B1Electronic apparatus and controlling method thereof
Publication Date: 2023.08.09 SAMSUNG ELECTRONICS CO LTD
  • EP3535876B1 patent drawingFigure 1~2
  • EP3535876B1 patent drawingFigure 3~4b
  • EP3535876B1 patent drawingFigure 5

AI summary

An electronic apparatus is provided. The electronic apparatus includes a memory configured to store waveform information of a signal received from a user's body, a transceiver configured to receive a signal from an external apparatus using the user's body as a communication medium, and at least one processor configured to confirm whether or not a waveform of the received signal corresponds to the stored waveform information, and perform a predetermined function depending on a confirmation result.