ระบบแคปท์ช่าเสียงเชิงคำถามกับรูปแบบรหัสคำตอบสำหรับผู้พิการทางสายตา

Abstract

In this paper, we proposed to the developed audio CAPTCHA for blind users. By our study on the design process of the audio CAPTCHA and User interface to get the new audio CAPTCHA system that best for blind users and visual users. It was done by studying the influence of Question-based audio CAPTCHA characteristic on the users with 2 factors which includes two types of CAPTCHA answer (Answer Code, First-Letter of Answering Word and Answer Code) and Type of Files of Instruction to Test CAPTCHA (Single File,
Multiple File). The measurements of the new audio CAPTCHA system are two areas, a security of new audio CAPTCHA that test with Automated Speech Recognition. The result of usability that was done by accurate time. The experiment was implemented with 32 participants. Include 16 subjects with blind users and 16 subjects with visual users. These experimental use a mixed factorial design. Another, we compare a new audio CAPTCHAs system with reCAPTCHA to find satisfaction. The result of experiment groups revealed that the use of 4 new audio CAPTCHA systems was not different. In addition, the result of satisfaction evaluation significantly showed that participants were more satisfied with the new audio CAPTCHA systems than audio reCAPTCHA, especially they satisfied with multiple file. However, the research did not find the interaction effect to the correctness and time used for successful.