Final published version
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Publication date | 2008 |
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Host publication | SOUPS 2008 - Proceedings of the 4th Symposium on Usable Privacy and Security |
Place of Publication | New York |
Publisher | ACM |
Pages | 44-52 |
Number of pages | 9 |
ISBN (print) | 9781605582764 |
<mark>Original language</mark> | English |
Event | 4th Symposium on Usable Privacy and Security, SOUPS 2008 - Pittsburgh, PA, United States Duration: 23/07/2008 → 25/07/2008 |
Conference | 4th Symposium on Usable Privacy and Security, SOUPS 2008 |
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Country/Territory | United States |
City | Pittsburgh, PA |
Period | 23/07/08 → 25/07/08 |
Conference | 4th Symposium on Usable Privacy and Security, SOUPS 2008 |
---|---|
Country/Territory | United States |
City | Pittsburgh, PA |
Period | 23/07/08 → 25/07/08 |
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.