@article{oai:miyazaki-u.repo.nii.ac.jp:00005690,
 author = {富田, 旋 and Tomita, Meguru and 初, 蕾 and Yamaba, Hisaaki and 山場, 久昭 and Aburada, Kentaro and 油田, 健太郎 and Okazaki, Naonobu and 岡崎, 直宣 and 富田, 旋 and Tomita, Meguru and Hatsu, Tsubomi},
 journal = {宮崎大学工学部紀要, Memoirs of Faculty of Engineering, University of Miyazaki},
 month = {Jul},
 note = {CAPTCHA is one of the most widely used Turing tests to prevent unauthorized use of online services, and it is a technology to distinguish whether the subject is a human being or a machine. With the advent of mobile devices, smartphones, tablets, etc. are the most commonly used devices to access the Internet and online services. Most existing CAPTCHA methods are not for use on mobile devices, but for use in conventional desktop PC environments. Since existing CAPTCHA can not fit well with mobile devices and it causes the conversion rate of Web site registration form etc. to drop, it is necessary to design CAPTCHA which is easy to use in mobile devices. Therefore, in this paper, we will consider a new CAPTCHA method that maintains convenience in mobile devices and has sufficient robustness. The proposed method is a dynamic CAPTCHA, it can recognize moving objects that move continuously from among a plurality of disturbing objects appearing at random positions and change their positions, and can trace for more than a certain period of time Whether it is a human being or a machine is judged by whether or not.},
 pages = {279--283},
 title = {モバイルデバイスの利用に適したCAPTCHA方式の検討},
 volume = {47},
 year = {2018},
 yomi = {トミタ, メグル and ハツ, ツボミ and ヤマバ, ヒサアキ and アブラダ, ケンタロウ and オカザキ, ナオノブ and トミタ, メグル}
}