Multispectral Biometric Watch Authentication

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Solution Overview

Problem

The existing methods for securely connecting a watch to a remote server are vulnerable due to the need for managing and storing numerous authentication elements, often in insecure environments, leading to security risks.

Innovation Solution

A method utilizing a watch equipped with a multispectral biometric skin sensor that captures images of the wearer's skin to generate a digital identification element based on vascular network or skin texture, which is then used for secure authentication with a remote server, eliminating the need for direct user intervention and reducing security vulnerabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If authentication elements are stored on paper or in computer files, then ease of operation is improved, but security is worsened due to unprotected storage environments

Engineering Contradiction:
Improveease of operationVSAvoidsecurity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent replaces mechanical storage methods (paper files, physical archives) with a biometric authentication system that uses the human body's biological characteristics. The skin sensor captures biometric data directly from the wearer's skin, eliminating the need for physical storage of authentication elements and thereby resolving the contradiction between ease of operation and security.

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

Solution Approach 2:

The system uses the wearer's own body (skin) as the authentication mechanism. The biometric data is extracted from the wearer's skin without requiring external storage devices or manual intervention. This self-service approach eliminates security vulnerabilities associated with stored authentication elements while maintaining ease of use.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If multiple authentication elements are managed and stored, then adaptability is improved, but device complexity is worsened due to increased security risks

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs a universal biometric authentication system that can access multiple authentication elements through a single skin sensor. The sensor captures biometric data that can be used for various authentication purposes across different services, eliminating the need for separate storage and management of multiple authentication elements while maintaining adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The skin sensor acts as an intermediary that extracts biometric information from the wearer's skin. This intermediary mechanism simplifies the system by providing a single access point for multiple authentication elements, reducing the complexity of managing and storing multiple credentials while maintaining versatility.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If biometric data is captured and processed, then security is improved, but measurement precision is worsened due to the need for accurate biometric extraction

Engineering Contradiction:
ImprovesecurityVSAvoidmeasurement precision
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent utilizes changes in electrical parameters (resistance, capacitance) of the skin to extract biometric information. By measuring these electrical parameters at different locations on the skin, the system achieves both high security through biometric authentication and sufficient measurement precision to accurately identify unique skin characteristics.

Inventive Principle:
Principle #35Parameter changes

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 reliable and robust secure connection by transparently and discreetly authenticating the wearer based on biometric information, enhancing security and reducing the risk of authentication element exposure.

Implementation Method 1

a multispectral biometric skin sensor (33) comprising at least one photographic sensor (26), at least one multispectral lighting source (27) and at least one thermal image sensor (28)

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 2

The identification of a wearer is then carried out from at least one element of biometric information included in the skin of this wearer such as the vascular network of the skin or the texture of this skin

Methodology Applied
Scientific EffectAbsorption spectroscopy: Absorption Spectroscopy

Implementation Method 3

at least one thermal image sensor (28), the lighting source (27) being able to emit light radiation in wavelengths between 300 and 1100 nm

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Data Source

PatentEP3832407B1Method for secure connection of a watch to a remote server
Publication Date: 2024.03.27 TISSOT SA
  • EP3832407B1 patent drawingFigure 1~2

AI summary

The invention relates to a method for securely connecting a watch (100) to a remote server (200) of a service provider comprising the following steps: - authentication (9) of the wearer of the watch (100) authorizing access to the use of functions of this watch (100), and - selection (11) of one of said functions from an input interface of said watch aimed at establishing a connection between said watch (100) and the remote server (200); - identification (12) of the wearer of the watch (100) from at least one biometric information element included in a portion of the wearer's skin;- transmission (22) to the remote server (200) of an authentication element relating to the selected function as soon as the wearer is identified, and - carrying out an authentication (24) of the wearer with the remote server (200) from said authentication element in order to authorise an exchange of data between the watch (100) and this remote server (200).;