상세정보
학술지
Ratiometric Impedance Sensing of Fingers for Robust Identity Authentication
- 발행일
- 201909
- 출처
- Scientific Reports, v.9, pp.1-12
- ISSN
- 2045-2322
- 출판사
- Nature Research
- 협약과제
- 19JS2200, 임피던스 비율특성 기반 웨어러블 사용자 인증 기술, 노형욱
- 초록
- We present a novel biometric authentication system enabled by ratiometric analysis of impedance of fingers. In comparison to the traditional biometrics that relies on acquired images of structural information of physiological characteristics, our biological impedance approach not only eliminates any practical means of making fake copies of the relevant physiological traits but also provides reliable features of biometrics using the ratiometric impedance of fingers. This study shows that the ratiometric features of the impedance of fingers in 10 different pairs using 5 electrodes at the fingertips can reduce the variation due to undesirable factors such as temperature and day-to-day physiological variations. By calculating the ratio of impedances, the difference between individual subjects was amplified and the spectral patterns were diversified. Overall, our ratiometric analysis of impedance improved the classification accuracy of 41 subjects and reduced the error rate of classification from 29.32% to 5.86% (by a factor of 5).
- KSP 제안 키워드
- Authentication System, Biometric authentication, Identity Authentication, Impedance sensing, Physiological characteristics, Physiological traits, Ratiometric analysis, Structural information, classification accuracy, error rate