DIY laser long-distant listening device

Laser Espionage Microphone (how-to) - video powered by Metacafe

No DIY espionage kit is complete without a long-distance listening device, and no DIY long-distance listening device is complete unless it uses a sweet laser in some form or fashion. If you agree with that statement, then you're in luck, because the following project will show how you can use a laser pointer to hear noises from hundreds of feet away (the distance will be relative to the strength of the laser).

As with any tutorial or project that has the potential to be used illegally, we should warn you only to use this new-found knowledge for good, not bad. We won't be held responsible if you get caught eavesdropping on your crazy old neighbor, and wind up being incarcerated for the rest of your life. There's a fine line between good spying (i.e. bird watching, neighborhood watch, etc.) and bad spying (*cough* patriot act *cough*), so please err on the side of caution here.


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