Toward Improved Audio CAPTCHAs Based on Auditory Perception and Language Understanding

Hendrik Meutzner, Santosh Gupta, Viet Hung Nguyen, Thorsten Holz, Dorothea Kolossa. Toward Improved Audio CAPTCHAs Based on Auditory Perception and Language Understanding. ACM Trans. Inf. Syst. Secur., 19(4), 2017. [doi]

Abstract

Abstract is missing.