Making CAPTCHAs clickable

Details

Event Ninth Workshop on Mobile Computing Systems and Applications (HotMobile 2008)

Authors

Chow, Richard
Golle, Philippe
Jakobsson, Markus
Technical Publications
February 25th 2008
We show how to convert regular keyboard-entry CAPTCHAs into clickable CAPTCHAs. The goal of this conversion is to simplify and speed-up the entry of the CAPTCHA solution, to minimize user frustration and permit the use of CAPTCHAs on devices where they would otherwise be unsuitable. We show how to obtain a secure clickable CAPTCHA that is well suited for use on cell phones. We support the practical viability of our approach by results from a user study, and an analysis of its security guarantees.

Citation

Chow, R.; Golle, P.; Jakobsson, M.; Wang, X.; Wang, L. Making CAPTCHAs clickable. Ninth Workshop on Mobile Computing Systems and Applications (HotMobile 2008); 2008 February 25-26; Napa, CA. NY: ACM; 2008; 91-94.

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