Watch Access Security With Periodic Multispectral Biometric Verification
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Solution Overview
Problem
Existing watch security methods allow unauthorized access once the wearer is authenticated, particularly in cases of theft.
Innovation Solution
A method utilizing a multispectral skin biometric sensor and periodic identity verification through a combination of visual and thermal imaging, along with a graphical authentication process, ensures continuous and non-intrusive identity confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-step authentication with skin texture measurement is implemented, then authentication reliability is improved, but vulnerability to theft after initial authentication worsens
Solution Approach 1:
The patent implements periodic re-authentication by continuously capturing biometric data (skin texture, temperature, vascular pattern) and comparing it against stored reference data. This periodic verification ensures that even if initial authentication succeeds, unauthorized access is detected when the wearer is replaced, directly resolving the vulnerability to theft after authentication.
Solution Approach 2:
The system continuously monitors biometric parameters and provides immediate feedback by comparing current readings with reference data. When discrepancies exceed thresholds (indicating unauthorized access), the system responds by alerting the user or blocking access. This closed-loop feedback mechanism dynamically maintains security based on real-time biometric verification.
2Object-affected harmful factors
If continuous biometric monitoring is implemented, then security against theft is improved, but system complexity worsens
Solution Approach 1:
The patent leverages existing multi-functional components in smartwatches: the display screen serves both as user interface and biometric sensor (touch-sensitive, capable of optical and thermal sensing); the processor handles both operational control and biometric analysis; the same hardware platform supports both authentication and theft prevention functions. This universal use of existing components implements continuous monitoring without proportionally increasing system complexity.
3Measurement precision
If multiple authentication parameters are monitored, then authentication accuracy is improved, but energy consumption worsens
Solution Approach 1:
The system implements a tiered monitoring approach where not all biometric parameters are continuously measured at full precision. Instead, the system uses a combination of passive sensing (thermal, optical reflection) and active sensing only when needed, adjusting measurement intensity based on context. This partial action approach maintains sufficient authentication accuracy while significantly reducing energy consumption compared to continuous full-spectrum biometric monitoring.
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
Provides reliable and automatic identity verification, preventing unauthorized access by continuously checking the wearer's identity without requiring repeated authentication.
Implementation Method 1
at least one multispectral lighting source (37) and at least one thermal image sensor (38), the lighting source (37) being able to emit light radiation in wavelengths between 300 and 1100 nm
Implementation Method 2
at least one thermal image sensor (38)... capturing images of a portion of skin of the wearer... without illumination when it is a question of carrying out a capture of thermal images
Data Source
Figure 1~2
AI summary
The invention relates to a method for securing access to a watch (100) comprising the following steps: - authentication (10) of the wearer of the watch (100) in order to authorize access to the functions of this watch (100) from an interaction between the wearer of the watch and a graphic representation included in said watch (100), and - periodic control (20) of the identity of the wearer of the watch by a verification of the validity of a digital identification element determined from at least one biometric information element of the wearer of said watch in order to maintain/delete the authorization of access to said functions.