When I'm studying Machine learning, a question came up to my mind. Why can we be recognized as humans when we check the “I’m not a robot” box.which is the reCAPTCHA v2 provided by google to protect websites from blocking the robot attack.
It’s said that when we check the checkbox, at the same time, we’re also sending some data to Google, like the mouse trace of the previous seconds before we press the button and our IP address...etc.
So I'm thinking if the instability of our mouse trace can be a proof of “we are real”, is the unstable state closer to reality than stable? Or is the unstable just a subjective judgment from human, that something is out of our control.
In this work, I tried to make the PC mouse out of control. I programmed it so it will move slightly random when I still have the main control over it.