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Multilingual highlighting CAPTCHA
, Article Proceedings - 2011 8th International Conference on Information Technology: New Generations, ITNG 2011, 11 April 2011 through 13 April 2011, Las Vegas, NV ; 2010 , Pages 447-452 ; 9780769543673 (ISBN) ; Shirali Shahreza, M ; Sharif University of Technology
2010
Abstract
There are many websites specially designed for mobile phones. Some hackers write automated programs to abuse these website services and waste the website resources. Therefore, it is necessary to distinguish between human users and computer programs. Methods known for achieving this are known as CAPTCHA (Completely Automated Public Turing test to tell Computers and Human Apart). CAPTCHA methods are mainly based on the weaknesses of OCR (Optical Character Recognition) systems and ask the user to type a word. So using them is difficult in tools such as PDAs (Personal Digital Assistant) or mobile phones that lack a complete keyboard. In this paper, a new CAPTCHA system is proposed for...