UFS 211 TASK 9

'LIE DETECTOR'

Lie detector is a technology which detects and functions to ascertain false and falsehood in response. It can be used without a subject's knowledge and mostly used by private industry for pre-employment screening, investigating thefts, and even periodic staff checks. It's normally understood that it's voice generation mechanism-vibrations of the vocal chords and resonance of cavities inside the head. Dektor claims that the muscle tightening occurs very quickly, and can change from one word to the next so it is possible to pick out a word or phrase that caused stress. In the meanwhile, the device is used for pre-employment interviews so that they can investigate possibly suspicious behaviour. Finally, the device also can be used to probe a whole range of personal issues totally like union and political affiliations.