The prompt of ‘I’m Not a Robot’ is often found when browsing the website. Now after clicking on it you will also be wondering why I have to prove that I am not a robot? And secondly, why does the system know that I am a man?
In fact, this small checkbox looks straight in appearance but behind it is a complex system called Captcha (complete automated public turning test to tell computers and humans apart). This system is to protect the website from spam, data theft and fraud.
The system determines that you are a man or a robot ‘
When you click on ‘Im Not a Robot’, it is not just click but it keeps in mind your movements. In a nutshell, the system that has your mouse movement, how to scroll, and when clicked, keeps in mind. However, then the system then determines whether you are a man or a robot. Humans usually rotate the cursor slowly and uneven, while the robot rotates the cursor precisely.
Second, the system collects information on your device and browser, called ‘browser fingerprinting’. Such as IP address, screen resolution, browser version, plugins, time zones, etc. This makes it known, whether your browsing setup is normal or suspicious.
Difficult task for a robot
If you are signed in to a Google Account and using Recaptcha, your browsing history and activity by the system verify that you are a man or a robot. If everything looks normal, there is no problem but something may seem strange, you will give you an option to select photos, such as a traffic light or a bus pics. This is an easy task for men but also a difficult task for a robot.
In short, the ‘Im not a Robot’ checkbox is not just one click. A smart system works behind this, which determines your behavior whether you are a person or not. Captcha is a digital gatekeeper that protects the website from automated traffic.
