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Re:Blocking via an Unsolvable CAPTCHA by shakna on Wednesday January 17, 2018 @05:04AM (#16166784)
> Of course it doesn't actually work, but figuring out why makes an interesting exercise.

I've always found that kind of interesting. The US lets you patent just about anything.

But in my home country, Australia, one of the patent requirements is that it actually appears to function in the way you are claiming it does. ("The application must be for something patentable, like a practical adaption, not for an idea or principle.")

I wonder if that has any impact on patent trolling, or if it's just as pervasive.

Re:Blocking via an Unsolvable CAPTCHA by lisper on Wednesday January 17, 2018 @12:05PM (#16169593)
Theoretically it's a requirement in the U.S. as well. To get a patent, the invention has to be "useful", and presumably to be useful it has to work. But in practice this is never enforced.