CAPTCHA is actually an acronym for Completely Automated Public Turing test to tell Computers and Humans Apart, and simply provides an additional layer of security to ensure it is a human and not an automated device/bot trying to login into a password protected account. What this means, in a nutshell, is that a captcha test is a tool that helps to distinguish a human user from a computer user online.
Steps to set up captcha?
To set up captcha for a user signup into your Trackier account, simply go to Customization>Sign Up Questions>Re-Captcha. There you can find the Secret Key and Site Key and the Google Admin URL to get your API Key Pair.
A simple form populates on the Google URL where you can put up your domain and the Secret Key accessed from the panel.
On following the set-up instructions on the Google form, the google captcha will be successfully integrated in your Sign up form.