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Authors: Gerardo Reynaga and Sonia Chiasson

Affiliation: Carleton University, Canada

ISBN: 978-989-8565-73-0

Keyword(s): CAPTCHAs, Security, Usability, Mobile, Smartphones.

Related Ontology Subjects/Areas/Topics: Human Factors and Human Behaviour Recognition Techniques ; Information and Systems Security ; Information Assurance ; Security and Privacy in Mobile Systems

Abstract: Completely Automated Public Turing tests to tell Computers and Humans Apart (CAPTCHA) are challenge-response tests used on the web to distinguish human users from automated bots (von Ahn et al., 2004). In this paper, we present an exploratory analysis of the results obtained from a user study and a heuristic evaluation of captchas on smartphones; we aimed to identify opportunities and guide improvements for captchas on smartphones. Results showed that existing captcha schemes face effectiveness and user satisfaction problems. Among the more severe problems found were the need to often zoom and pan, and too small control buttons. Based on our results, we present deployment and design guidelines for captchas on smartphones.

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Paper citation in several formats:
Reynaga, G. and Chiasson, S. (2013). The Usability of CAPTCHAs on Smartphones.In Proceedings of the 10th International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2013) ISBN 978-989-8565-73-0, pages 427-434. DOI: 10.5220/0004533904270434

@conference{secrypt13,
author={Gerardo Reynaga. and Sonia Chiasson.},
title={The Usability of CAPTCHAs on Smartphones},
booktitle={Proceedings of the 10th International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2013)},
year={2013},
pages={427-434},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004533904270434},
isbn={978-989-8565-73-0},
}

TY - CONF

JO - Proceedings of the 10th International Conference on Security and Cryptography - Volume 1: SECRYPT, (ICETE 2013)
TI - The Usability of CAPTCHAs on Smartphones
SN - 978-989-8565-73-0
AU - Reynaga, G.
AU - Chiasson, S.
PY - 2013
SP - 427
EP - 434
DO - 10.5220/0004533904270434

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