Timeline for Practical non-image based CAPTCHA approaches?
Current License: CC BY-SA 2.5
2 events
| when toggle format | what | by | license | comment | |
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| May 23, 2017 at 12:26 | history | edited | URL Rewriter Bot |
replaced http://stackoverflow.com/ with https://stackoverflow.com/
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| Aug 15, 2008 at 17:40 | history | answered | andrewrk | CC BY-SA 2.5 |