Screen Unlocking Method using Behavioral Characteristics when Taking Mobile Phone from Pocket

Abstract

In this paper, we propose a screen unlocking system using an accelerometer and pressure sensor arrays mounted on a mobile phone as casual identification. The proposed system focuses on the user's behavioral characteristics when taking their mobile phone from their pocket and the pressure distribution when gripping the mobile phone during this motion. In the evaluation experiment, 12 out of 30 taking-out actions succeed to unlock the mobile phone screen, and our system achieved 0.43 FAR after 18 templates had been trained.