A secure annuli CAPTCHA system

Jie Zhang, Min-Yen Tsai, Kotcharat Kitchat, Min-Te Sun, Kazuya Sakai, Wei-Shinn Ku, Thattapon Surasak, Tipajin Thaipisutikul. A secure annuli CAPTCHA system. Computers & Security, 125:103025, 2023. [doi]

Authors

Jie Zhang

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Min-Yen Tsai

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Kotcharat Kitchat

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Min-Te Sun

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Kazuya Sakai

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Wei-Shinn Ku

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Thattapon Surasak

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Tipajin Thaipisutikul

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