Animated CAPTCHA

An animated CAPTCHA on Flickr.
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<blockquote class="wp-embedded-content"><a href="http://www.jeffreythompson.org/blog/2014/07/17/animated-captcha/">Animated CAPTCHA</a></blockquote>
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</script><iframe sandbox="allow-scripts" security="restricted" src="http://www.jeffreythompson.org/blog/2014/07/17/animated-captcha/embed/" width="600" height="400" title="&#8220;Animated CAPTCHA&#8221; &#8212; Jeff Thompson" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe>
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