Application of Pattern for New CAPTCHA Generation Idea

Application of pattern for new CAPTCHA generation idea aims to present concept that applies mathematics theory. In this study, pattern is chosen for CAPTCHAs generating. There are 400 participants who approaching this study on the internet. Three type of pattern CAPTCHAs with two sample were study. There are shape pattern, color pattern and shape-color pattern. Amount of first correct answers, amount of total answers, percentage of success, amount of spent time and five point usability score were collected. The result shows that the most amount of first correct answers is color-shape pattern at 363. It also conforms to Color-shape CAPTCHA which shows the highest percentage of success at 97.06. In the amount of spent time, shape-color pattern CAPTCHAs indicates least time to solve at 5.25 s. The total spent time to find the correct answer of all type CAPTCHAs are 5.25 to 8.87 s. Usability score result shows that shape pattern CAPTCHAs is the highest score in all aspects at 4.34 with non-difference significant at p-value < 0.01. The approach rates over level 4.00 in all, which means the approach feels all type of Pattern CAPTCHAs practical is useful.