reCAPTCHA

A CAPTCHAStands for "Completely Automated Public Turing Test To Tell Computers and Humans Apart"; a type of challenge-response test used in computing to determine whether or not the user is human. field verifies that the person filling in your form is actually a person (and not a machine) . The reCAPTCHA field does this by checking a single box that only humans can do. The following image shows reCAPTCHA images (cleared and selected).

• Content tab
  —Image: Captcha Content tab—

  

  • Site key. Enter a valid site key.
  • Secret key. Enter a secret key.

  A developer must add JavaScript code in the HTML code your site serves to user for reCAPTCHA to work. See Automatically render the reCAPTCHA widget on the Google developer's website.

• Settings tab

  Settings tab fields are not used for form elements.