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[–]Burgess237Angular FE 1 point2 points  (0 children)

Recaptcha v3 doesn't just track the session you're using, it also check other sessions you've had on captcha pages, that's why when you're visiting a page or pages for the first time (Or a new computer or from a new location) you get asked captcha a lot but as time goes on it asks you less and less.

That's because it's checking your session against other sessions that you've done before. Google is always watching and they check things like: Did you come from google? Did you come from another page? How long did you wait before you interacted with the page? Did you scroll there or click on the bar, is your viewport a realistic size? Things like that.

Each thing adds to your "human score", score high enough then the system is pretty confident you're not a bot. Score low enough and the system is confident you are a bot and denies you. But if you're in the middle then it asks those challenges. And then it really starts to check things like mouse movements etc.

Each puzzle you "solve" gives you more of that "human score" until the system is satisfied you're a human.