@inproceedings{shirali2009spoken,
  title={Spoken captcha: A captcha system for blind users},
  author={Shirali-Shahreza, Sajad and Abolhassani, Hassan and Sameti, Hossein and Hassan, M},
  booktitle={2009 ISECS International Colloquium on Computing, Communication, Control, and Management},
  volume={1},
  pages={221--224},
  year={2009},
  organization={IEEE}
}

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