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by danso 2930 days ago
This is correct, mouse movement is one factor for Google's one-click Captcha:

https://www.wired.com/2014/12/google-one-click-recaptcha/

> IP addresses and cookies provide evidence that the user is the same friendly human Google remembers from elsewhere on the Web. And Shet says even the tiny movements a user’s mouse makes as it hovers and approaches a checkbox can help reveal an automated bot.