Now showing items 1-3 of 3

  • Bubble Captcha - A Start of the New Direction of Text Captcha Scheme Development 

    Bostik, Ondrej; Horak, Karel; Klecka, Jan (Institute of Automation and Computer Science, Brno University of Technology, 2017-06-01)
    CAPTCHA, A Completely Automated Public Turing test to tell Computers and Humans Apart, iswell-known system widely used in all sorts of internet services around the world designated to secure the webfrom an automatic malicious ...
  • Creating A Random Characters For Captcha Schemes From Existing Fonts 

    Bostik, Ondrej (Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2018)
    For nearly a two decades, development of new mechanisms for securing web applications from unwanted traffic caused by automated programs called CAPTCHA schemes are under constant improvement. As significant fraction of ...
  • Usability Evaluation of Randomly Generated Fonts for Bubble Captcha 

    Bostik, Ondrej; Horak, Karel; Klecka, Jan (Institute of Automation and Computer Science, Brno University of Technology, 2018-06-01)
    A Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA), is the wide-spread concept of systems suited to secure the web services from automated SPAM scripts. The most common CAPTCHA systems ...