Final published version
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - Usability of CAPTCHAs or usability issues in CAPTCHA design
AU - Yan, Jeff
AU - El Ahmad, Ahmad Salah
PY - 2008
Y1 - 2008
N2 - CAPTCHA is now almost a standard security technology, and has found widespread application in commercial websites. Usability and robustness are two fundamental issues with CAPTCHA, and they often interconnect with each other. This paper discusses usability issues that should be considered and addressed in the design of CAPTCHAs. Some of these issues are intuitive, but some others have subtle implications for robustness (or security). A simple but novel framework for examining CAPTCHA usability is also proposed.
AB - CAPTCHA is now almost a standard security technology, and has found widespread application in commercial websites. Usability and robustness are two fundamental issues with CAPTCHA, and they often interconnect with each other. This paper discusses usability issues that should be considered and addressed in the design of CAPTCHAs. Some of these issues are intuitive, but some others have subtle implications for robustness (or security). A simple but novel framework for examining CAPTCHA usability is also proposed.
KW - CAPTCHA
KW - Security
KW - Usability
U2 - 10.1145/1408664.1408671
DO - 10.1145/1408664.1408671
M3 - Conference contribution/Paper
AN - SCOPUS:65449133250
SN - 9781605582764
SP - 44
EP - 52
BT - SOUPS 2008 - Proceedings of the 4th Symposium on Usable Privacy and Security
PB - ACM
CY - New York
T2 - 4th Symposium on Usable Privacy and Security, SOUPS 2008
Y2 - 23 July 2008 through 25 July 2008
ER -