CAPTCHA improvements

AK's weblog

Saturday, September 25. 2004

CAPTCHA improvements

Yesterday, I shortly discussed a CAPTCHA system for WordPress to stop comment spammers. I also criticized that the CAPTCHA generator is not quite advanced. Well, instead of just talking I decided to improve it, and I think the result is not too bad. You can find the source for the createCodeImage routine here. It adds a gradient background and horizontal and vertical lines plus semitransparent rectangles that should pretty much mess up any OCR program's edge detection.

Posted by admin in Blogging at 11:38 | Comments (0) | Trackbacks (0)

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