[Position Paper] Motivating the Need for Evaluation Criteria for Captchas
نویسنده
چکیده
We argue that a set of usability heuristics are needed for easy and quick evaluation of Captchas implementations. With this set of heuristics we contribute to sustain the Captcha Mantra: “Easy for humans, hard for machines”. In particular, the usability of Captcha schemes change radically when utilized on mobile environments. We are developing a set of heuristics for use by practitioners wishing to evaluate which Captcha scheme is most appropriate for their website.
منابع مشابه
Generation and Performance Evaluation of Synthetic Handwritten CAPTCHAs
In this paper we explore the potential of handwriting for use in CAPTCHAs. A synthetic handwriting generation method is presented, where the generated textlines need to be as close as possible to human handwriting without being writer-specific. The primary application of such a synthetic generator is in the design of handwritten CAPTCHAs (Completely Automatic Public Turing Test to Tell Computer...
متن کاملCAPTCHAs: The Good, the Bad, and the Ugly
A CAPTCHA is a program that generates challenges that are easy to solve for humans but difficult to solve for computers. The most common CAPTCHAs today are text-based ones where a short word is embedded in a cluttered image. In this paper, we survey the state-of-the-art of currently deployed CAPTCHAs, especially of some popular German sites. Surprisingly, despite their importance and the larges...
متن کاملEvaluation of ASGE Criteria for Prediction of Choledocholithiasis: Can Early Endoscopic Ultrasound Utilization Make the Prediction More Accurate?
Background: ASGE predictive model for the detection of choledocholithiasis is a reasonable approach for the management of patients with cholelithiasis. Surgeons do not pursue cholecystectomy without evaluation of the biliary system when laboratory tests and diagnostic imaging evidence show biliary duct involvement. Literature revisions reveal that the prediction of choledocholithiasis based on ...
متن کاملSEIMCHA: a new semantic image CAPTCHA using geometric transformations
As protection of web applications are getting more and more important every day, CAPTCHAs are facing booming attention both by users and designers. Nowadays, it is well accepted that using visual concepts enhance security and usability of CAPTCHAs. There exist few major different ideas for designing image CAPTCHAs. Some methods apply a set of modifications such as rotations to the original imag...
متن کاملIdentification and Application of Need Assessment Criteria and Prioritization of Environmental Health Projects in Military Centers Based on Weighing Matrix and Field Evaluation
Background and Aim: This study aimed to identify criteria affecting the prioritization of environmental health projects in military centers and to propose a prioritization strategy. Methods: In this descriptive study, by reviewing and summarizing the theoretical frameworks, the criteria for assessing and prioritizing environmental health projects were identified. Next, by presenting the general...
متن کامل