Portable Voice Stress Analyzer The Portable Voice Stress Analyzer is one nifty device to have, measuring micro tremors in one’s voice in order to determine a lie. Sounds pretty much like a polygraph test that we often see on TV, save for the fact that this is much cheaper at £29.95 compared to the hundreds, or perhaps even thousands intelligence agencies fork out for a similar functioning machine. Needless to say, the Portable Voice Stress Analyzer’s results cannot be taken at face value, so it still pays to have common sense working overtime too while you’re talking to other people.

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