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Input-agreement: a new mechanism for collecting data using human computation games.

, and . CHI, page 1197-1206. ACM, (2009)

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Improving accessibility of the web with a computer games, , , , and . CHI, page 79-82. ACM, (2006)Provably Secure Steganography., , and . IEEE Trans. Computers, 58 (5): 662-676 (2009)Collective Intelligence 2012: Proceedings, and . CoRR, (2012)CAPTCHA: Using Hard AI Problems for Security., , , and . EUROCRYPT, volume 2656 of Lecture Notes in Computer Science, page 294-311. Springer, (2003)Public-Key Steganography., and . EUROCRYPT, volume 3027 of Lecture Notes in Computer Science, page 323-341. Springer, (2004)TagATune: A Game for Music and Sound Annotation., , , and . ISMIR, page 361-364. Austrian Computer Society, (2007)Duolingo: learn a language for free while helping to translate the web.. IUI, page 1-2. ACM, (2013)Human Computation.. ICDE, page 1-2. IEEE Computer Society, (2008)Improving Image Search with PHETCH., , , and . ICASSP (4), page 1209-1212. IEEE, (2007)Provably Secure Steganography (Extended Abstract), , and . Advances in Cryptology -- CRYPTO 2002, volume 2442 of Lecture Notes in Computer Science, page 77--92. Springer, (2002)