CAPTCHA suitable for smartphones

Authors:
Yusuke Tsuruta;Mayumi Takaya;Akihiro Yamamura
Affiliations:
Department of Computer Science and Engineering, Akita University, Akita, Japan;Department of Computer Science and Engineering, Akita University, Akita, Japan;Department of Computer Science and Engineering, Akita University, Akita, Japan
Venue:
ICT-EurAsia'13 Proceedings of the 2013 international conference on Information and Communication Technology
Year:
2013

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Abstract

We propose a CAPTCHA that tells data made by a computer program from one-stroke sketch data given by a human being using embodied knowledge. Utilizing touchscreens of smartphones, we realize this approach and resolve a conceivable inconvenience caused by the existing CAPTCHAs when using smartphones due to the limited display size of smartphones. We implement the proposed technique and analyze its validity, usefulness and security.