Abstract
To improve accessibility of Indian regional websites especially government websites content is offered in regional languages besides English language. However, these websites use CAPTCHA tests in English languages in regional language pages. This reduces usability and accessibility because non-native speakers of English language are required to pass CAPTCHA tests in English language. The accessibility of such websites can be improved substantially if secure CAPTCHA tests in regional languages are used. However, such an implementation is challenging as Indian regional languages are unique in many ways, are written differently and have different alphabets, glyphs, pronunciations, accents, etc. This paper reviews existing CAPTCHA scripts and Indian regional websites in terms of their usability, accessibility and multilingual support. It reports the design of CAPTCHA script in Hindi, Punjabi, Urdu and English languages which can be used to generate CAPTCHA tests in websites offering content in these languages. The designed CAPTCHA script offers features such as audio, localized onscreen keyboard, random patterns and fonts to improve usability and security.
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