What is CAPTCHA? | SEO Tips and Trics
A "CAPTCHA" is script used in computing as an attempt to ensure that the response is generated by a person. It looks like images to stop automated submissions.
Captcha stands for "Completely Automated Public Turing test to tell Computers and Humans Apart".
A Captcha is a type of challenge-response test most often placed within web forms to determine whether the user is human. This script generates images which contain security codes used for protecting a form from spam bots.
Also Read: Search Engine Reputation Management
Also Read: Search Engine Reputation Management