Identity Authentication Based on Dynamic Touch Behavior on Smartphone

Wang, Zhengjie; Chen, Fang; Zhou, Naisheng; Ma, Mingjing; Li, Xue; Guo, Yinjing; Chen, Da

doi:10.1109/icivc52351.2021.9527023

Cited by 4 publications

(1 citation statement)

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“…Features derived from the sensor output are fed into machine learning models and then authenticate users of a device over a selected window of time [14]. This field in cybersecurity has grown in recent years in an effort to improve security on devices [15]; however, this technology has not yet been applied to measurement of children's mobile device use, which has the potential to improve the accuracy of passive sensing and thereby fill a critical public health need.…”

Section: Introductionmentioning

confidence: 99%

Advancing Objective Mobile Device Use Measurement in Children Ages 6–11 Through Built-In Device Sensors: A Proof-of-Concept Study

Finnegan,

Weaver,

Yang

et al. 2024

Human Behavior and Emerging Technologies

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Mobile devices (e.g., tablets and smartphones) have been rapidly integrated into the lives of children and have impacted how children engage with digital media. The portability of these devices allows for sporadic, on-demand interaction, reducing the accuracy of self-report estimates of mobile device use. Passive sensing applications objectively monitor time spent on a given device but are unable to identify who is using the device, a significant limitation in child screen time research. Behavioral biometric authentication, using embedded mobile device sensors to continuously authenticate users, could be applied to address this limitation. This study examined the preliminary accuracy of machine learning models trained on iPad sensor data to identify the unique user of the device in a sample of children ages 6 to 11. Data was collected opportunistically from nine participants (8.2 ± 1.75 years, 5 female) in the sedentary portion of two semistructured physical activity protocols. SensorLog was downloaded onto study iPads and collected data from the accelerometer, gyroscope, and magnetometer sensors while the participant interacted with the iPad. Five machine learning models, logistic regression (LR), support vector machine, neural net (NN), k-nearest neighbors (k-NN), and random forest (RF), were trained using 57 features generated from the sensor output to perform multiclass classification. A train-test split of 80%–20% was used for model fitting. Model performance was evaluated using F1 score, accuracy, precision, and recall. Model performance was high, with F1 scores ranging from 0.75 to 0.94. RF and k-NN had the highest performance across metrics, with F1 scores of 0.94 for both models. This study highlights the potential of using existing mobile device sensors to continuously identify the user of a device in the context of screen time measurement. Future research should explore the performance of this technology in larger samples of children and in free-living environments.

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Section: Introductionmentioning

confidence: 99%