Document Type



CAPTCHA standing for Completely Automated Public Turing test to tell Computers and Humans Apart has received a remarkable amount of attention. Deciphering distorted texts mostly in English is still a human, not a computer task, that could help prevent abuse of online services. The current CAPTCHA requires users to be able to read English alphabets. As such, Thai CAPTCHA may be the choice for Thai Internet users who are not familiar with English. However, no published work has examined the extent to which Thai Internet users are aware of CAPTCHA. This study thus attempts to survey their awareness of, and attitude toward, CAPTCHA.

Based on the 340 number of usable online questionnaire submission, Thai Internet users are aware of CAPTCHA but their understanding needs little fine-tune. Using exploratory factor analysis, their attitude towards CAPTCHA was classified into two dimensions. They perceived (1) drawback of general CAPTCHA and (2) feasibility of Thai CAPTCHA.

In addition to extending our insight into application of CAPTCHA in the Thai Internet user context, online service providers could initiate certain plans in response to their attitude and understanding.