: Aimed at hobbyists and "evil geniuses" ranging from beginners to intermediate electronics enthusiasts.
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 101 Spy Gadgets for the Evil Genius
: Most projects can be constructed for roughly $30 or less . : Aimed at hobbyists and "evil geniuses" ranging