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We do this with some "slide this puzzle piece into place" CAPCHAs; my understanding is the detection is based on how slowly you fit the piece in. A computer would be linear in its movement, whereas a human with a mouse would operate with some unevenness and/or slowness and/or inaccuracy.



Which seems easy enough to program around if you are trying to commit fraud against whatever is gated by these tools.


Get humans to do a few hundred, log their movements, sample from the distribution, sleep(t), and voilà.


One would presume it's harder than that, given it's the product of a team/company specializing in detecting exactly such a thing, right?


If you look behind the curtain in a lot of industries, many of them are held together with chewing gum and string, but have big marketing departments.


Sure, but less so on the core value prop for that company.


I feel like replaying from 100 randomly-selected but real human movements would be pretty hard to detect.




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