Abstract: This paper is to study the possibility of new and easy way for authentication which is cheaper and faster. In the time where there are many web based and cloud based applications and all uses password based authentication scheme and user require remembering many passwords. In this paper, a study on different possible authentication methods is done to find which require less user physical effort, which is more convenient, cheaper, faster and secure method so that it can take over the authentication process in future and make it easier for users.

Keywords: Authentication, Password Mobile Device, Human Computer Interaction, Security, Usability, Deployability.