Giving Motivation for Using Secure Credentials through User Authentication by Game

One of the issues in the knowledge-based user authentication is that users do not set and use a secure credential. Some methods exist to be able to resolve this issue, such as password policy, education, and password meter. However, these countermeasures impose a usability cost that is difficult for many users to accept. Therefore, these measures have not propelled users to use secure credentials in user authentication. We consider that motivating users is necessary to voluntarily accept the cost of using secure credentials. Thus, we attach a role-playing game function to pattern-based user authentication, and provide an incentive to users through user authentication. We conducted a small experiment with eight participants, and the result demonstrated that the prototype system has the potential to prompt users to use secure credentials.