Obtrusive and Unobtrusive Authentication of Portable Devices for Security

Abstract

In this information edge, everyone carry one or more portable devices with them. As far as security of these devices is concerned, no specific method is found yet that only provide security of these devices. This paper focuses on various methods for authentication of these devices. Portable devices can be authenticated by two ways: Implicit authentication which does not require user attention such as Gait authentication and explicit authentication which require user input such as finger print recognitiion, speech recognition, iris matching, PIN & password based authentication etc.