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CAPTCHA Design Color, Usability, and Security

Lookup NU author(s): Ahmad El Ahmad, Dr Jeff Yan


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Most user interfaces use color, which can greatly enhance their design. Because the use of color is typically a usability issue, it rarely causes security failures. However, using color when designing CAPTCHAs, a standard security technology that many commercial websites apply widely, can have an impact on usability and interesting but critical implications for security. Here, the authors examine some CAPTCHAs to determine whether their use of color negatively affects their usability, security, or both.

Publication metadata

Author(s): El Ahmad A, Yan J, Ng WY

Publication type: Article

Publication status: Published

Journal: IEEE Internet Computing

Year: 2012

Volume: 16

Issue: 2

Pages: 44-51

Print publication date: 01/03/2012

ISSN (print): 1089-7801

ISSN (electronic): 1941-0131

Publisher: IEEE


DOI: 10.1109/MIC.2011.102


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