Using FIGlets for open source CAPTCHA with PHP
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Captcha images are commonplace on Web site applications and forms. With its latest framework, Zend is introducing a new Captcha Form Element that can provide multiple types of Captcha mechanisms. Among them is Captcha integration for something called FIGlets, group of large characters built out of ASCII characters that outline a letter or word. "We've finally found a use for them other than just drawing pictures," Sinclair explained. "You can use them for Captcha now and it's hard for machines to figure out the characters."
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