martes, 7 de junio de 2011

Everything You Ever Wanted To Know About CAPTCHAs But Were Afraid To Ask

Love them or hate them - CAPTCHAs have become ubiquitous on the Internet.

What on earth is a CAPTCHA anyway, and where did it come from? Responsible for eye-strain the world over, the humble CAPTCHA has been the centre of much attention as the single most effective weapon in the fight against web spam. But are they effective?

Source:
http://www.makeuseof.com/tag/wanted-captchas-afraid-technology-explained/

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