Continuous Authentication Over Hand-Waving for Android Smartphones

Abstract

In this paper we propose a method of continuous authentication based on micromovements of the hand of mobile user. It shows good accuracy: on average, 4 movements are enough to understand who is using the device: a legitimate user or a violator. Our method has been tested on various devices, and applicability in conditions of limited training sample and in absence of some sensors in the smartphone has been proved. The proposed method can be used as an independent method of continuous authentication, or as an additional method, in combination with other methods of user recognition like passwords or PINs.