A building security system which allows clients of building tenants to set up their own appointments, allows the building tenants to control and analyze such appointment scheduling, and enables building security personnel to analyze and control the number of visitors to the building. Visitors schedule their appointments via a visitor interface part of the system and providing the required appointment schedule information. Security personnel have integrated information concerning the number of visitors expected for a particular day, the number of visitors already in the building, and the number of past visitors for that day. Detailed information about visitors, and information on visitor's entering or leaving the building is also available. Because, visitors' information is already stored on the system, the security guard may also readily print a visitors pass as necessary. Security personnel with special access privileges (e.g., security manager) have access to building's visiting activity reports.