CAPTCHINO - A Gamification of Image-Based CAPTCHAs to Evaluate Usability Issues

Abstract

CAPTCHA technology is at a boom in the field of information security. When text CAPTCHAs are at a point of break down, it is the time for the image based CAPTCHAs to get a pace. But often the designers of the CAPTCHA forget the issues related to the usability as the objective of a CAPTCHA is to reduce the burden of solving it along with the robustness. In this paper, we have shown an analysis of some image based CAPTCHAs with different usability factors. This analysis is made manually with the data collected by the GWAP concept.