Articles Tagged 'captcha'
Fight with Spam: 15+ Free Captcha Solutions
Siva KumarA 'Captcha' (completely automated public Turing test to tell computers and humans apart) is a challenge-response test most often placed within web forms to determine whether the user is human or a spam bot. The purpose of CAPTCHA is to block form submissions by spam bots, which are automated scripts that post spam content everywhere they can.It usually involves an image showing some distorted text, requiring the user to type in what they see in the distorted text.
