Biometric Authentication Device Using Random Timing Checks
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Solution Overview
Problem
Biological information measurement devices face challenges in securely measuring and authenticating blood pressure and pulse information while preventing impersonation, especially when used at home or in scenarios where continuous monitoring is required, as existing methods either increase manufacturing costs or fail to prevent unauthorized use.
Innovation Solution
A biological information measurement device that continuously measures biological information and includes a speaker or display unit, storage control, input unit for identification information, and personal identification unit to determine the authenticity of the user at random timings, generating an authentication success or failure rate to ensure correct data storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vein pattern detection sensor is used to prevent impersonation, then authentication reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent uses an inexpensive input unit (camera, microphone, or character input) to capture images, sounds, or character strings that copy or represent the vein pattern information. Instead of using expensive specialized sensors, the system captures visual or auditory representations that can be processed for authentication, thereby reducing device complexity while maintaining authentication reliability
Solution Approach 2:
The patent replaces complex mechanical vein pattern detection sensors with simpler optical (camera), acoustic (microphone), or input-based systems. This substitution uses different physical domains (optical, acoustic, electrical input) to achieve the same authentication function with simpler, more affordable components
2Device complexity
If a finger is put into the device for detecting vein pattern, then device complexity is reduced, but authentication reliability deteriorates due to impersonation risk
Solution Approach 1:
The system performs authentication checks at multiple random timings during continuous biological information measurement. By periodically requesting identification information at unpredictable intervals, the system maintains simple device architecture while preventing impersonation, as the random timing makes it difficult for impostors to coordinate with the legitimate user
Solution Approach 2:
The system requests identification information in advance at random timings before final data storage occurs. This preliminary authentication check ensures that the person providing biological information is the authorized user, preventing impersonation while keeping the device simple
3Reliability
If authentication is performed at random timings, then impersonation is prevented, but measurement time increases due to repeated authentication requests
Solution Approach 1:
The system performs authentication checks at only some timings during the continuous measurement period, rather than at every single measurement point. By selecting random timings for authentication requests among multiple possible timings, the system achieves adequate impersonation prevention without requiring authentication at every moment, thus limiting time loss while maintaining security
Data Source
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AI summary
Provided are a biological information measurement device, a personal identification method, and a personal identification program, whereby biological information measured from an authorized user can be sufficiently stored while preventing impersonation of the user. A biological information measurement device 100 requests inputting by an input unit 60 of identification information necessary for personal identification at each of a plurality of timings after measurement of biological information is started, determines on the basis of identification information and in synchrony with each of the plurality of timings whether a user wearing the biological information measurement device 100 is an authorized user, generates identification result information indicating a relationship between the number of times the abovementioned request is made and the number of times that the user is determined to be authorized, and determines the correctness of the biological information stored in a storage medium 40 on the basis of the identification result information.