I have never needed to be tested by one, just want to know how they know?
2006-10-28 08:10:44 · 5 answers · asked by Kayla 5 in Computers & Internet ➔ Security
they measure your stress levels
2006-10-28 08:18:26 · answer #1 · answered by damnitjannet09 3 · 0⤊ 0⤋
They probe your brain. Then when you lie the machine triggers a red alert that you lied.
2006-10-28 14:49:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋
lie detectors sense small increases in heart rate that are common when lying.
2006-10-28 08:18:26 · answer #3 · answered by copeland0077 2 · 0⤊ 0⤋
they monitor your pulse rate and brain activity, then they can see when person is lying
2006-10-28 08:14:40 · answer #4 · answered by Anonymous · 0⤊ 0⤋
not really u just have to be really relaxed when u are answering questions
2006-10-28 08:14:39 · answer #5 · answered by mcrlover862 1 · 0⤊ 0⤋