The events of 9/11, wiretapping, and general NSA surveillance activities have increased public awareness of spy technologies. This volume reflects developments in aerial, radio, and telecommunications that affect government, local security, and corporations. It features information on RFID chips, face recognition systems, U.S. Department of Homeland Security initiatives and legislation, mass surveillance methods, voice-over IP technology, higher resolution satellite images, radar imaging, and privacy issues. Additional material includes forensic methods of chemical detection of blood and fingerprints as well as DNA surveillance and portable DNA kits. Profusely illustrated with extensive references and indexes, the book lays the groundwork for more specialized study on specific technologies.