When Google first released the first version of the validation tool, every user must pass a CAPTCHA test to access the page or do something. This version has been discontinued.
In version 2, Google uses a checkbox that makes about half of users pass through without entering a CAPTCHA. After ticking, you can access it immediately (NO CAPTCHA) or will be challenged a bit with tables, images .
The 3rd version also completely changed everything when the webmaster has the right to choose how to display the CAPTCHA. Instead of displaying immediately to users, reCAPTCHA v3 will calculate to let webmasters know whether it is a person or bot.
'With reCAPTCHA v3, we completely change the way pages check people and bots by scoring and tell you how suspicious that interaction is, minimizing the need for users to pass the tests. challenge. reCAPTCHA 3 runs risk analysis in the background, suspicious traffic alerts, while regular users are still comfortable on the site. '
Webmasters have more control. They can set a threshold for visitors to be automatically allowed to visit the site, add custom signs to detect, determine the type of validation they want visitors to perform, such as two-factor authentication or electrical numbers. phone.
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