Abstract or Summary:
In this brief paper, we explore the issue of accessible authentication with respect to click-based graphical passwords. These schemes normally rely on complex visual presentation and fine motor control for pointing. We take the approach of identifying the semantic structure, and show how the same kind of scheme could work with alternative interaction modalities. In particular, we explore the use of audio passwords that work similarly to click-based graphical passwords, and report on a simple informal study of their characteristics. We conclude that modality independent authentication is a reasonable concept, but that great care is needed because the modalities employed in implementation will affect both usability and security.