Security analysis of and proposal for image-based authentication

Most human authentication systems have been text-based. Recent psychological studies show users´ inability to recall random character sequences. Image-based authentication systems have shown promise in circumventing this problem. In addition, they are more intuitive and user-friendly. This paper presents and analyzes a user authentication technique using images that can be used in local as well as remote authentication. We also consider TEMPEST and other forms of attack.