User Authentication Based on Handwriting Analysis of Pen-Tablet Sensor Data Using Optimal Feature Selection Model

Nasima Begum, Md Azim Hossain Akash, Sayma Rahman, Jungpil Shin, Md Rashedul Islam and Md Ezharul Islam
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Nasima Begum: Department of Computer Science and Engineering, University of Asia Pacific, Dhaka 1216, Bangladesh
Md Azim Hossain Akash: Department of Computer Science and Engineering, University of Asia Pacific, Dhaka 1216, Bangladesh
Sayma Rahman: Department of Computer Science and Engineering, University of Asia Pacific, Dhaka 1216, Bangladesh
Jungpil Shin: School of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, Japan
Md Rashedul Islam: Department of Computer Science and Engineering, University of Asia Pacific, Dhaka 1216, Bangladesh
Md Ezharul Islam: Department of Computer Science and Engineering, Jahangirnagar University, Dhaka 1342, Bangladesh

Future Internet, 2021, vol. 13, issue 9, 1-25

Abstract: Handwriting analysis is playing an important role in user authentication or online writer identification for more than a decade. It has a significant role in different applications such as e-security, signature biometrics, e-health, gesture analysis, diagnosis system of Parkinson’s disease, Attention-deficit/hyperactivity disorders, analysis of vulnerable people (stressed, elderly, or drugged), prediction of gender, handedness and so on. Classical authentication systems are image-based, text-dependent, and password or fingerprint-based where the former one has the risk of information leakage. Alternatively, image processing and pattern-analysis-based systems are vulnerable to camera attributes, camera frames, light effect, and the quality of the image or pattern. Thus, in this paper, we concentrate on real-time and context-free handwriting data analysis for robust user authentication systems using digital pen-tablet sensor data. Most of the state-of-the-art authentication models show suboptimal performance for improper features. This research proposed a robust and efficient user identification system using an optimal feature selection technique based on the features from the sensor’s signal of pen and tablet devices. The proposed system includes more genuine and accurate numerical data which are used for features extraction model based on both the kinematic and statistical features of individual handwritings. Sensor data of digital pen-tablet devices generate high dimensional feature vectors for user identification. However, all the features do not play equal contribution to identify a user. Hence, to find out the optimal features, we utilized a hybrid feature selection model. Extracted features are then fed to the popular machine learning (ML) algorithms to generate a nonlinear classifier through training and testing phases. The experimental result analysis shows that the proposed model achieves more accurate and satisfactory results which ensure the practicality of our system for user identification with low computational cost.

Keywords: user authentication; handwriting analysis; optimal feature; feature selection; machine learning; SVM; F-1 score; sensor data; SFFS (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2021
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