: Infrared light converters, LED illuminators, and night vision viewers.
: Most projects can be constructed for roughly $30 or less . 101 Spy Gadgets for the Evil Genius
: Aimed at hobbyists and "evil geniuses" ranging from beginners to intermediate electronics enthusiasts. : Infrared light converters, LED illuminators, and night
: 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