The first sequence of four articles examines the integration of new security resources: technology use by the police, and its relation to the criminal sciences and the legislative process; the German police and their adoption of new technology; and the reliance of private security on technological devices. The second sequence explores the impact of the new technologies on social and organizational structures: the use of video surveillance in a shopping center and in the Transport Authority of the City of Paris; the sensitive hospital climate coming to terms with modern security; and the use of technology in situational crime prevention. The third sequence, a round-table discussion, raises the problems of regulating the new technologies from the perspective of a business owner, elected official, police officer, customs officer, and lawyer. In trying to formulate a regulatory policy, this discussion clearly demonstrates the tensions existing between public and private sector, between public interest and individual liberties, and between technological know-how and social usefulness.