How to build a lie detector for under $20

November 29, 2007 by Geeks are Sexy | 4 comments

Here’s a short video tutorial that will teach you how to make a cheap lie detector for under $20. Can anyone here confirm if “commercial” lie detectors also work that way?

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4 Comments »

Comment by ninja.s
2007-11-29 10:22:45

I can’t verify if commercial lie detectors are similar, but wow, that’s an awesome vid. I’m saving that for later… experimentation.

 
Comment by Jon
2007-11-29 23:08:35

good one!(no lie) i think i will build one.(no lie) i’ll get back to you on that (sound quality changes)…..
jon

 
Comment by cirtex
2007-12-02 21:45:19

nice vdo , human creativity is unlimited

 
Comment by Ayu
2008-01-18 20:40:44

Nice one!

so how to know if that person is lying?
the sound pitch will get lower or higher?

i’m a little confused.

 
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