Why it's still being allowed for job interviews is beyond me. They're far from accurate and easy to cheat. Any veteran spy will tell you that. The machines need to be outlawed.
Polygraphys are unscientific nonsense, however people have a tendency to become honest when they're hooked up to one. I know several people who've had to take them for gov't jobs, everyone knows they're based on pseudoscience but still wouldn't tell a lie when taking the test.
