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by username223 3112 days ago
I can't find the link, but I remember someone doing some experiments awhile back suggesting that the "I'm a human" checkbox just checks if you have Google's tracking "PREF" cookie installed. I don't remember if there seemed to be device fingerprinting involved as well. In any case, if I use one of those and don't have to click on street signs, I know it's a sign I should tidy up my browser state.