: Aimed at hobbyists and "evil geniuses" ranging from beginners to intermediate electronics enthusiasts.
: Phone number decoders, "spammer jammers," and voice changers.
: Most projects can be constructed for roughly $30 or less .
: The second edition also focuses on privacy, teaching users how to detect and disable snooping devices. Sample Projects The book is divided into several thematic parts:
: Infrared light converters, LED illuminators, and night vision viewers.
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
: Sound-activated and motion-activated camera triggers.