Timeline for Practical non-image based CAPTCHA approaches?
Current License: CC BY-SA 2.5
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 21, 2009 at 22:35 | history | edited | Bob Aman | CC BY-SA 2.5 |
Additional clarifications.
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| Oct 21, 2009 at 22:19 | history | answered | Bob Aman | CC BY-SA 2.5 |