[PeterisP]

It seems completely different than a lie detector. Classic polygraphs, in essence, measure stress-responses. This measures [success of] pattern recognition. You can't use it for many yes/no lie-detector questions, however, it has a potential to be much more accurate (and less spoofable) for questions like "Do you remember this face?" or "Have you seen 'ox9j$lkjew' before ? It's a password to a child-porn site we found on your computer - wondering if you have used it.."