reCaptcha is wildly sophisticated under the hood[1]. I use it on all three major browsers and find the number of challenges varies from 0 to 4: sometimes it says I'm verified without doing anything, other times I need to go through 4 screens.
I would love to see someone put some numbers behind this claim, because I think it is false.
EDIT: Are you downvoting because you don't like reCaptcha, or because you can't (or won't) set up an experiment to demonstrate this claim and prefer to just jump on the bandwagon?
I've experienced reCaptcha simply looping forever. After solving 5 or so screens, I give up and hope that reloading the page works. If not I usually switch to Chromium, which doesn't even get a single puzzle, just verified.
My heavily adblocked FF has a lot of trouble with recaptcha, while the Chrome instance that I only use for logged-in Google and LinkedIn doesn't. It seems like there are enough moving parts that it would be hard to figure out why our anecdotes are so different.
reCaptcha is wildly sophisticated under the hood[1]. I use it on all three major browsers and find the number of challenges varies from 0 to 4: sometimes it says I'm verified without doing anything, other times I need to go through 4 screens.
I would love to see someone put some numbers behind this claim, because I think it is false.
[1] https://www.blackhat.com/docs/asia-16/materials/asia-16-Siva...
EDIT: Are you downvoting because you don't like reCaptcha, or because you can't (or won't) set up an experiment to demonstrate this claim and prefer to just jump on the bandwagon?