From electronic wire taps to baby monitors and long-distance video and listening devices, startling changes occur everyday in how we gather, interpret, and transmit information. An extraordinary range of powerful new technologies has come into existence to meet the requirements of this expanding field.Your search for a comprehensive resource for surveillance devices is over. Understanding Surveillance Technologies: Spy Devices, Their Origins and Applications serves as a provocative, broad-based, and visually appealing reference that introduces and describes the technologies rapidly moving into mainstream computer and consumer markets. It discusses information gathering and tracking devices from a variety of traditional and emerging technologies. It highlights common uses, possible abuses, countermeasures, and issues of legality and privacy. The format of this book is modular. Each chapter starts with an introduction, then describes some of the devices within the category and the context in which they are used. This is followed by a history, common applications, and legal and ethical implications, and print and Web resourcs. With the exception of the introductory first chapter, each chapter stands on its own and they can be read in any order. From handheld magnifying glasses to sophisticated magnetic resonance imaging machines, "spy" devices allow us to see beyond the basic senses that nature gave us in ways we wouldn't have imagined two hundred years ago. Understanding Surveillance Technologies: Spy Devices, Their Origins and Applications gives you the groundwork toward understanding more advanced technologies such as radar, sonar, video cameras, and genetic profiling.