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A comment on A captcha that requires your computer to solve equations in the background.

Re:A captcha that requires your computer to solve equations ... by mises on Sunday September 08, 2019 @11:48AM (#20911229)
This is not a quick process, even for legitimate users. I am on a quite-capable computer, and it takes long enough that I am all but sure it will harm conversion rates.
[ Parent | on HN ]
Re:A captcha that requires your computer to solve equations ... by rocqua on Sunday September 08, 2019 @11:58AM (#20911291)
Besides, if this becomes big enough spammers will just get GPU/FPGA/ASICs to get around this. The imposed cost of 3s of CPU is far from prohibitive.
[ Parent | on HN ]