Mobile phone user authentication scheme based on embedded accelerometer
In order to guarantee the information security of mobile phones,a user authentication scheme based on a mobile phone with three-axial embedded accelerometer is proposed.It utilizes an accelerometer to capture the acceleration signal of a person's authenticating gesture.We propose a new algorithm called Difference Bottom-Up (DBU) to achieve the automatic detection of gesture endpoints.After denoising the acceleration data streamsby wavelet packet decomposition,we adopt the Dynamic Time Warping (DTW) method to calculate the similarities between test gesture and reference gesture,and the results of authentication are obtained from these similarities.Compared with the existing methods,the proposed DBU algorithm is more precise in automatic gesture endpoint detection.The authentication experimental results demonstrate that the false rejection rate is below 5 ％ while the false acceptance rate is 0％,which shows the effectiveness of the scheme.
accelerometerdifference bottom-up (DBU)mobile phone user authenticationdynamic time warping(DTW)biometric
国家科技期刊平台
NSTL
万方数据
维普
