I love these sorts of "is it the real thing" tests. This poses a great economic incentive for the producers to put effort into R&D to advance the state of the a

I love these sorts of "is it the real thing" tests. This poses a great economic incentive for the producers to put effort into R&D to advance the state of the art. It's just like how image-based captchas have been incentivizing advances in computer vision.