CAPTCHA design: color, usability, and security

Ahmad Salah El Ahmad; Jeff Yan; Wai Yin Ng

doi:10.1109/MIC.2011.102

CAPTCHA design: color, usability, and security

Ahmad Salah El Ahmad, Jeff Yan^*, Wai Yin Ng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	44-51
Number of pages	8
Journal	IEEE Internet Computing
Volume	16
Issue number	2
Early online date	22 Jul 2011
DOIs	https://doi.org/10.1109/MIC.2011.102
Publication status	Published - 31 Mar 2012

Keywords

CAPTCHAs
color
internet security
robustness
usability

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10.1109/MIC.2011.102

Cite this

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CAPTCHA design: color, usability, and security

Abstract

Keywords

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