Déjà Vu: a user study using images for authentication
SSYM'00 Proceedings of the 9th conference on USENIX Security Symposium - Volume 9
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Authentication interfaces are GUIs that provide the protection for an application or system. In this paper, we present icAuth: a novel image and color based authentication interface for the authentication process. We enhance the existing Image Based Authentication (IBA) with an additional interactive method. In our approach, the user not only chooses image(s) as a key during the registration process, but also clicks on various regions on the image to generate an additional key. This additional key is in the form of a sequence of colors that correspond to the clicked areas. In essence, the user chooses a color sequence along with the selected images. During the next authentication process, the user has to produce the same color sequence on the recognized images. The user is required to remember the same switching sequence among the images, without having to memorize the precise location of the initial clicks during setup.