ECG-based authentication systems: a comprehensive and systematic review

In recent years, security systems based on biometric features have become a promising solution to identify humans, and it is preferred over traditional methods working based on what we know. With the rapid growth of such identification methods, ECG authentication approaches as an emerging biometric recognition scheme is developed. It can be efficiently used to identify individuals, specifically for continuous authentication to allow particular access privileges for users. In comparison with other biometric features even in abnormal conditions, it gives more valid and better results. Although there are several works that have offered some techniques in order to overcome the various issues affecting the ECG authentication schemes' outputs, there are still many concerns to be considered. How can we see, there are not many studies that deal with all aspects of ECG authentication techniques? The objective this paper is to evaluate some surveys related to ECG authentication domain since 2010. We have done a comprehensive taxonomy including existing methods and techniques in ECG based authentication domain. With the aim of providing a classical taxonomy form, this study presents a Systematic Literature Review (SLR) on ECG-based authentication schemes to introduce the state-of-the-art approaches in this domain. We have done the selection of journals and conference proceedings using the standard systematic literature review methodology in order to find and assess the studies related to ECG authentication. Finally, the paper is concluded with a summary of the content of the paper, and open issues and future research challenges are discussed.