J 2016

HMOG: New Behavioral Biometric Features for Continuous Authentication of Smartphone Users

SITOVÁ, Zdeňka, Jaroslav ŠEDĚNKA, Qing YANG, Ge PENG, Gang ZHOU et. al.

Basic information

Original name

HMOG: New Behavioral Biometric Features for Continuous Authentication of Smartphone Users

Authors

SITOVÁ, Zdeňka (203 Czech Republic, belonging to the institution), Jaroslav ŠEDĚNKA (203 Czech Republic, belonging to the institution), Qing YANG (156 China), Ge PENG (156 China), Gang ZHOU (156 China), Paolo GASTI (380 Italy) and Kiran BALAGANI (356 India)

Edition

IEEE Transactions on Information Forensics and Security, 2016, 1556-6013

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10201 Computer sciences, information science, bioinformatics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 4.332

RIV identification code

RIV/00216224:14310/16:00089158

Organization unit

Faculty of Science

UT WoS

000372355200001

Keywords in English

Behavioral biometrics; HMOG; biometric key generation; continuous authentication; energy evaluation

Tags

Tags

International impact, Reviewed
Změněno: 6/4/2017 18:22, Ing. Andrea Mikešková

Abstract

V originále

We introduce hand movement, orientation, and grasp (HMOG), a set of behavioral features to continuously authenticate smartphone users. HMOG features unobtrusively capture subtle micro-movement and orientation dynamics resulting from how a user grasps, holds, and taps on the smartphone. We evaluated authentication and biometric key generation (BKG) performance of HMOG features on data collected from 100 subjects typing on a virtual keyboard. Data were collected under two conditions: 1) sitting and 2) walking. We achieved authentication equal error rates (EERs) as low as 7.16% (walking) and 10.05% (sitting) when we combined HMOG, tap, and keystroke features. We performed experiments to investigate why HMOG features perform well during walking. Our results suggest that this is due to the ability of HMOG features to capture distinctive body movements caused by walking, in addition to the hand-movement dynamics from taps. With BKG, we achieved the EERs of 15.1% using HMOG combined with taps. In comparison, BKG using tap, key hold, and swipe features had EERs between 25.7% and 34.2%. We also analyzed the energy consumption of HMOG feature extraction and computation. Our analysis shows that HMOG features extracted at a 16-Hz sensor sampling rate incurred a minor overhead of 7.9% without sacrificing authentication accuracy. Two points distinguish our work from current literature: 1) we present the results of a comprehensive evaluation of three types of features (HMOG, keystroke, and tap) and their combinations under the same experimental conditions and 2) we analyze the features from three perspectives (authentication, BKG, and energy consumption on smartphones).