Abstract

Smartphones are context-aware devices that provide a compelling platform for ubiquitous computing and assist users in accomplishing many of their routine tasks anytime and anywhere, such as sending and receiving emails. The nature of tasks conducted with these devices has evolved with the exponential increase in the sensing and computing capabilities of a smartphone. Due to the ease of use and convenience, many users tend to store their private data, such as personal identifiers and bank account details, on their smartphone. However, this sensitive data can be vulnerable if the device gets stolen or lost. A traditional approach for protecting this type of data on mobile devices is to authenticate users with mechanisms such as PINs, passwords, and fingerprint recognition. However, these techniques are vulnerable to user compliance and a plethora of attacks, such as smudge attacks. The work in this paper addresses these challenges by proposing a novel authentication framework, which is based on recognizing the behavioral traits of smartphone users using the embedded sensors of smartphone, such as Accelerometer, Gyroscope and Magnetometer. The proposed framework also provides a platform for carrying out multi-class smart user authentication, which provides different levels of access to a wide range of smartphone users. This work has been validated with a series of experiments, which demonstrate the effectiveness of the proposed framework.

Highlights

  • Smartphones are ubiquitous, becoming more and more sophisticated with the advancement in their computing, sensing, and networking powers

  • Smartphone user authentication based on physical activity recognition using mobile sensing has been analyzed

  • A novel multi-class user classification scheme is presented for the authentication of smartphone users, which is based on physical activity recognition incorporated with micro-environment sensing

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Summary

Introduction

Smartphones are ubiquitous, becoming more and more sophisticated with the advancement in their computing, sensing, and networking powers. The pervasive nature of smartphones, together with integrated sensing capabilities, has changed the landscape of people’s everyday life. Smartphones have become the guardians for most of our personal information, such as medical information (e.g., heart rate), bank account details, and personal credentials for different services and applications. With the increasing use of smartphones, users have begun to worry about the confidentiality of their data and information. As smartphones are intended for quick and recurrent access, it can lead to Sensors 2017, 17, 2043; doi:10.3390/s17092043 www.mdpi.com/journal/sensors smartphones are intended for quick and recurrent access, it can lead to compromised privacy of smartphone data and information [3]. Itdata has and nowinformation become critical privacy of sensitive data compromised privacy of smartphone [3]. Itdata has and nowinformation become critical privacy of sensitive data compromised privacy of smartphone [3]. to

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