@article{oai:miyazaki-u.repo.nii.ac.jp:00005898,
 author = {藤, 竜成 and Fuji, Ryusei and 坂本, 竜也 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 藤, 竜成 and Fuji, Ryusei and Sakamoto, Tatsuya},
 journal = {宮崎大学工学部紀要, Memoirs of Faculty of Engineering, University of Miyazaki},
 month = {Jul},
 note = {In the Internet, bots which send large amounts of spam comments on bulletin boards, blogs, etc., and obtain webmail service accounts illegally hinder the smooth operation of the web service. In order to prevent the above bot activeties, a system named CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is used. Typical examples of CAPTCHA include a character string based CAPTCHA that users need to interpret distorted character strings, and an image based CAPTCHA that users need to select images conforming to questions from multiple images. However, these methods are hard to decipher for visually impaired people. Therefore, we adopt another CAPTCHA called audio based CAPTCHA. Among audio based CAPTCHAs, a speech recognition based CAPTCHA is a main method, but this method has problems such as difficulty in listening to the speech, time required for answering, low attack resistance by bots. In this paper, we propose an audio based CAPTCHA which can respond to visually impaired people's use and solve the CAPTCHA in a short time with a simple operation. In the proposed method, the user need to perform a mouse operation when a specific environmental sound is heard, and from the operation result, it is determined whether the user is a human or a bot. In addition, we implemented the proposed method CAPTCHA and conducted an experiment to evaluate practicality and usability. As a result of the experiment, we archived a high correct answer rate, and the SUS score, which is an index of the usability evaluation, also reached a high score.},
 pages = {239--243},
 title = {マウスを用いた単純操作の音声型CAPTCHAの提案},
 volume = {48},
 year = {2019},
 yomi = {フジ, リュウセイ and サカモト, タツヤ 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 フジ, リュウセイ}
}