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Date: 2015-06-18 08:41:31Computer access control Security Computer security CAPTCHA Transaction authentication number Authentication Challengeresponse authentication Multi-factor authentication Internet bot Turing test Form | ISSN No: International Journal & Magazine of Engineering, Technology, Management and Research A Peer Reviewed Open Access International JournalAdd to Reading ListSource URL: www.ijmetmr.comDownload Document from Source WebsiteFile Size: 1,65 MBShare Document on Facebook |