Authors: Janković, Radmila 
Brodić, Darko
Affiliations: Mathematical Institute of the Serbian Academy of Sciences and Arts 
Title: Usability analysis of the specific captcha types
Journal: Proceedings of the International Scientific Conference UNITECH
Volume: 2
Conference: International Scientific Conference UNITECH 2016
Issue Date: Nov-2016
Rank: M33
The study presents the usability analysis representing the process of solving the specific types of CAPTCHA. Accordingly, the response time to solve a certain CAPTCHA as well as its correctness is used as the main usability parameters. As an input the various demographic factors are used such as: gender, age, educational level, and Internet experience. The experiment is conducted on 55 examinees from the region of Eastern Serbia, which used tablets to solve a specific type of CAPTCHA. The obtained results are statistically processed. After that, four hypotheses are set. Each of them are examined and (diss)proved. The obtained results should be used in different areas of e-banking, Internet use, online polling, etc. in order to make the process of solving CAPTCHA easier for the Internet users.

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