CAPTCHA Design: A Novel Security Method using Sindhi Language

CAPTCHA is one of the most widely used security on internet now a day's. This CAPTCHA test is used against the Bots that creep into website and perform automatic registration. Among different type of CAPTCHAs one of oldest and easiest method is text based. Text based CAPTCHAs are available in the market in different languages i.e. English, Arabic, Urdu. This paper focuses on design of text based CAPTCHA as security. The proposed design of the CAPTCHA uses Sindhi which is an Arabic scripting language named as CaSN i.e CAPTCHA as Sindhi Numbers. CaSN focuses on the Sindhi Language numbers to generate a CAPTCHAimage for the users. An algorithm is used to generate the CaSN image. In this regard, the evaluation was performed on 290 participants from local areas of Sindh, Pakistan. The study produced prominent results after performing CaSN test among participants of the study. The study was limited among local areas of Sindh, Pakistan. The limitation of the study is to provide a new context in CAPTCHA especially for Sindhi speaking people