Offices can be targets for theft, unlawful entry, kidnapping, bombings, forcible occupation and sabotage. Effective barriers, both physical and psychological, can reduce the likelihood of these threats. The following guidelines will help you analyse office security and offers measures to reduce your target potential: Install key-card access systems at main entrances and other appropriate doors. Issue access control badges, with recent photographs, to all employees and authorised contractors. Upgrade perimeter control systems with intercoms and closed circuit-monitoring devices. Keep master and extra keys locked in a security office. Develop crisis communication among key personnel and security officers, involving intercoms, telephones, duress alarms or other concealed communications. Have a back-up communication system, such as two-way radios. Locate executive offices near the inner core of the building to afford maximum protection and avoid surveillance from outside. Arrange office space so unescorted visitors can be easily noticed. Have staff follow strict access control procedures, do not allow exceptions. Keep important papers locked in secure cabinets. Keep offices neat and orderly to identify strange objects or unauthorised people more easily. Empty rubbish receptacles often. Only open packages and large envelopes in executive offices if the source or sender is positively identified. Keep closets, service openings, telephone and electrical closets locked at all times. Protect crucial communications equipment and utility areas with an alarm system. Source: United States Customs and Immigration Enforcement