I. INTRODUCTION

II. GRAPHICAL PASSWORDS METHODS
   A. Recognition-Based Technique
   B. Pure Recall-Based Technique
   C. Cued Recall-Based Technique

III. RECOGNITION-BASED ALGORITHMS

IV. USABILITY IN ISO STANDARD
   A. ISO 9241
   B. ISO 9126
   C. ISO 13407

V. USABILITY COMPARISON ON RECOGNITION-BASED ALGORITHMS

VII. CONCLUSIONS