The innovative design of "Poker image-based schemes CAPTCHA''

• Main Authors: Chuang, Kai-Ting, 莊凱婷
• Other Authors: Chuang, Ming-Cheng
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/84710299755022238900

碩士 === 國立交通大學 === 應用藝術研究所 === 101 === This study combines both concepts of web page CAPTCHA and poker general using to design a new system which called poker image-based schemes CAPTCHA. It could refer transaction or interaction for website security verification. “Poker image-based schemes CAPTCHA” takes general poker cards as database. In the first layer, it will make a random choosing and five cards will be showed. The user should fill in those numbers in order to continue the second layer. In the second layer, the user should identify how many cards in spades, hearts, diamonds or clubs. Users can get pass when they make right answers in these two layers. “Poker image-based schemes CAPTCHA” is easy to use and has no area-restriction. And, it costs less and has no problem with expanding cards drawing. What’s more, it presents the features of poker cards with numbers, letters, colors, patterns and others. By using complex images, “Poker image-based schemes CAPTCHA” is hard to be cracked by OCR. To verify the workability of “Poker image-based schemes CAPTCHA”, researcher designed an experiment web page. This page could offer different groups to examine it. The correct rate is 84.88%, and an average time is 33.9 seconds for each to operate. The study found there has no significant difference in operating time by different gender, and different education background. However, different age and career could cause the dissimilarity. The following studies may use poker cards’ multiple symbol characteristics to increase the pattern design complexity and connect the “Poker image-based schemes CAPTCHA” design to meet website owners and users’ qualifications.