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"Security Analysis and Related Usability of Motion-Based CAPTCHAs: Decoding ..."
Yi Xu et al. (2014)
- Yi Xu, Gerardo Reynaga, Sonia Chiasson, Jan-Michael Frahm, Fabian Monrose, Paul C. van Oorschot
:
Security Analysis and Related Usability of Motion-Based CAPTCHAs: Decoding Codewords in Motion. IEEE Trans. Dependable Secur. Comput. 11(5): 480-493 (2014)

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