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Re:You probably don’t need ReCAPTCHA by norrius on Wednesday June 12, 2019 @04:02AM (#20162628)
It could work... If you want to set minimal system requirements to visit your website.

It will also annoy users of password managers with auto-filling capabilities. "password" is normally used for actual passwords.

Besides, nothing stops the attacker from replacing your code with a faster implementation.

Re:You probably don’t need ReCAPTCHA by mnw21cam on Wednesday June 12, 2019 @04:36AM (#20162793)
There are password hashing algorithms out there (like bcrypt) that specifically take a long time to compute using the fastest method that we can think of.
Re:You probably don’t need ReCAPTCHA by beiller on Wednesday June 12, 2019 @11:59AM (#20166007)
I shouldn't have named it "password". The idea was all the form fields are hidden and the process is transparent to the user.