101 Spy Gadgets For The Evil Genius -

: Sound-activated and motion-activated camera triggers.

: Infrared light converters, LED illuminators, and night vision viewers. 101 Spy Gadgets for the Evil Genius

: Phone number decoders, "spammer jammers," and voice changers. : Sound-activated and motion-activated camera triggers

is a DIY project book by Brad Graham and Kathy McGowan , published by McGraw-Hill TAB . It provides step-by-step instructions for building functional espionage tools—such as night vision viewers, hidden cameras, and phone voice changers—using inexpensive, easily obtainable electronic components. Core Features & Content and phone voice changers—using inexpensive