The Community for Technology Leaders
Green Image
Issue No. 02 - March-April (2012 vol. 16)
ISSN: 1089-7801
pp: 44-51
Ahmad El Ahmad , Newcastle University,UK
Wai-Yin Ng , Chinese University of Hong Kong
Jeff Yan , Newcastle University, UK
<p>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.</p>
CAPTCHAs, color, robustness, usability, Internet security
Ahmad El Ahmad, Wai-Yin Ng, Jeff Yan, "CAPTCHA Design: Color, Usability, and Security", IEEE Internet Computing, vol. 16, no. , pp. 44-51, March-April 2012, doi:10.1109/MIC.2011.102
114 ms
(Ver 3.1 (10032016))