Subscribe by EmailListen through walls with the high-tech spy stethoscope
September 27, 2007 by Kiltak |
We’ve all seen this in movies: Spies and private detectives using special devices to listen through walls. A few weeks ago, I posted about a Laser Espionage Microphone, and today, I’ll show you how you can make a high-tech spy stethoscope for under $25. All you need is:
- A cheap stethoscope
- A pair of multimedia microphones
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