A Study of Implementation of Image Based Authentication System

The paper aims on the study of a system for user authentication based on the use of images as passwords. The proposed method is thought to solve the traditional problems related to the authentication process in the Internet environment by exploiting the human brain's remarkable ability in image recognition. Authentication plays a very important role in protecting resources against unauthorized use. Many authentication processes exist from simple password based authentication system to costly biometric authentication systems. So when increasing security is an issue text based passwords are not enough to tackle such problems. The need for something more secure along with being user friendly is required. The image password demonstrates to be more secure than the common alphanumeric password and at the same time more easy-to-use. In this paper, we conduct a comprehensive survey of the existing graphical password techniques and comparing both alphanumeric and graphical passwords. We classify these techniques into two categories: recognition-based and recall-based approaches. We discuss the strengths and limitations of each method and point out the future research directions in this area. We also try to answer two important questions: "Are graphical passwords as secure as text-based passwords?"; "What are the major design and implementation issues for graphical passwords?"This survey will be useful for information security researchers and practitioners who are interested in finding an alternative to text-based authentication methods.