Captcha Design: Color, Usability, and Security
Date: July 22 2011
Publication: IEEE Internet Computing, Volume 16 Issue 2 / Technical Report CS-TR-1203
Page(s): 44 - 51
Source 1: https://prof-jeffyan.github.io/ic12.pdf
Source 2: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.384.3236&rep=rep1&type=pdf
Source 3: https://doi.org/10.1109/MIC.2011.102 - Subscription or payment required
Abstract or Summary:
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.
PasswordResearch.com Note: Earlier technical report: https://eprints.ncl.ac.uk/file_store/production/161161/53AA23F4-FDB7-4A2D-8A71-AA82E82A7A34.pdf
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