Biometric Authentication Device Anti-Spoofing via Sensor State Estimation
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Solution Overview
Problem
Existing systems for authenticating measurement results from biological information measuring devices are vulnerable to spoofing, where a person other than the intended user performs measurements, compromising the reliability of the data.
Innovation Solution
An authentication device and system that acquires measurement data from biological information measuring devices, uses sensors to estimate the user's state during measurement, and authenticates the data based on the enabled state of a personalized function and the user's behavioral and environmental patterns, preventing mistaken data acquisition through near-field wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a biological information measuring device is used to acquire measurement data, then the productivity of lifestyle improvement determination is improved, but the reliability is worsened due to spoofing vulnerability
Solution Approach 1:
The authentication device performs preliminary authentication of measurement data before it is used for lifestyle improvement determination. The acquisition unit acquires measurement data and time information, the estimation unit estimates the user's state at the measurement time, and the identification unit identifies whether the measured value pertains to the specific user based on the function enabled state and estimation results. This preliminary verification ensures data authenticity while maintaining system productivity.
2Reliability
If authentication based on function enabled state and state estimation is implemented, then the reliability of measurement data is improved, but the device complexity increases
Solution Approach 1:
The authentication device utilizes the existing sensor unit and function provision mechanisms of the biological information measuring device to perform authentication. The sensor unit, already present for measurement purposes, is repurposed to estimate user state for authentication. The function provision unit, which manages personalized functions, also tracks enabled states for authentication. This multi-functionality approach avoids adding separate dedicated authentication hardware, thereby limiting the increase in device complexity.
3Reliability
If spoofing detection mechanisms are added to the biological information measuring device, then the reliability is improved, but the ease of operation is worsened
Solution Approach 1:
The authentication process operates automatically without requiring user intervention. The acquisition unit automatically acquires measurement data and time information, the estimation unit automatically estimates the user's state based on sensor data, and the identification unit automatically identifies whether the measurement pertains to the specific user. The system performs self-authentication by comparing the function enabled state and estimated state against stored reference information, eliminating the need for manual authentication steps and maintaining ease of operation.
Data Source
AI summary
An authentication device according to an aspect of the present invention includes an acquisition unit configured to acquire measurement data including a measured value and measurement time information associated with the measured value from a biological information measuring device configured to measure a value related to biological information, a provision unit configured to provide a function to be used by one specific user, a sensor unit including at least one sensor, an estimation unit configured to estimate, on the basis of information acquired by the sensor unit, a state of the one specific user during a time range specified by the measurement time information, and an identification unit configured to identify whether the measured value pertains to the one specific user on the basis of whether the function is in an enabled state during the time range and an estimation result of the state.