Evaluation of Graphical Password Schemes in Terms of Attack Resistance and Usability

User Authentication is an important component of security. There are several mechanisms for authentication in use, such as alphanumerical usernames and passwords. However, due to the well-known weaknesses attached to this method, graphics-based passwords were suggested as an alternative. Due to the ability of humans to remember images faster and for a longer period. This study comprises of comprehensive research in the graphical password schemes and evaluates each of the available schemes at two main areas (attack resistance and usability). In the end, it also provides an answer to the question “Are graphical passwords more secure than alphanumerical passwords?”.