Evaluation of data processing techniques for unobtrusive gait authentication
Parker, William A.
MetadataShow full item record
The growth in smartphone usage has led to increased storage of sensitive data on these easily lost or stolen devices. In order to mitigate the effects of users who ignore, disable, or circumvent authentication measures like passwords, we evaluate a method employing gait as a source of identifying information. This research is based on previously reported methods with a goal of evaluating gait signal processing and classification techniques. This thesis evaluates the performance of four signal normalization techniques (raw signal, zero-scaled, gravity-rotated, and gravity rotated with zero-scaling). Additionally, we evaluate the effect of carrying position on classification. Data was captured from 23 subjects carrying the device in the front pocket, back pocket, and on the hip. Unlike previous research, we analyzed classifier performance on data collected from multiple positions and tested on each individual location, which would be necessary in a robust, deployable system. Our results indicate that restricting device position can achieve the best overall performance using zero-scaling with 6.13% total error rate (TER) on the XY-axis but with a high variance across different axes. Using data from all positions with gravity rotation can achieve 12.6% TER with a low statistical variance.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Performance measurement of a carrier battle group: a case study of the Commander in Chief, U.S. Atlantic Fleet's participation as a performance planning and reporting pilot project for fiscal year 1996 Smith, Robert Lee (Monterey, California. Naval Postgraduate School, 1996-12);The Commander In Chief, U.S. Atlantic Fleet (CINCLANTFLT) participated as a performance planning and reporting pilot project (PPRP) in support of the short term requirements of the Government Performance and Results Act ...
Lee, Han Chuan. (Monterey, California. Naval Postgraduate School, 2009-12);The previously developed guidance law implemented onboard the Small Unmanned Aerial Vehicle (SUAV) relies exclusively on the information from the image processing software and allows the performance of coordinated SUAV ...
Wescott, Clay G.; Jones, L.R. (2007);In recent years governments in many developing countries have followed developed nations in establishing results and performance monitoring frameworks that measure and report on progress against strategic plans, budgets ...