Comment It's Not The Polygraph You Need To Worry About (Score 3, Informative) 374
It's the one-way mirror in the room where the test is being administered.
I've been through a polygraph for something *very* serious. Some of our crypto just went "*poof*", and everyone was quite concerned. Understandably, so, too! Crypto is *not* supposed to just go "*poof*".
We were all asked if we wanted to take a polygraph, and I gladly volunteered, since it really did just vanish. (We later determined that the tape in question had been included in the daily destruction by mistake.) But even volunteering for it, a polygraph is a scary thing if you know nothing about it.
So I did my research. And yes, those websites were all visited and read, in detail. During the test, I tried some of the techniques that were taught, and sure enough, they work! You can make that machine sing "Bad Romance" as good as Lady Gaga. I thought it was kinda fun, actually?
But see, the machine was just to butter you up. If you were up to no good, the machine would make you nervous, even if you DO know how to manipulate it. And in the end, it doesn't matter.
There's a one-way mirror, and behind that mirror is a team of 3-4 people who are all very good at reading human beings. And they have thermographic cameras that measure your facial temperature to help them in reading those who are good at controlling their body language.
At the end of the day, a polygraph is just a tool that makes someone's job that much easier. It's just one tool in a chest of many, because no single tool alone is enough to get to the truth of the matter.
My own investigation was with NIS, who are very good at what they do, and very professional. They were after the truth, not a conviction. So I have no complaints about how *I* was treated. But if someone is looking for a victim, then having this information just might save your life.