Back to Basics: Functional Requirements

The first steps to deploying a holistic electronic security philosophy


Why are these ramifications important? If there are facilities that are primarily controlled by visual badge checking, then obviously a standardized, visually recognizable badge would be desired. Without electronic standards, the technology in the card, as well as the credential number in the database, will not allow access at different facilities without having to deploy multiple cards. This implied standardization requires standards for technology, protocols and a credential number for each employee that is shared in some fashion within the corporation with the various facilities.

The choice of technology for the electronic access control system — proximity, smart cards, etc. — is often based on corporate culture. The technology must be incorporated into every facility and new ones as they come aboard. Minimal training should be considered to educate employees on the new technology.

Depending on the existing access control systems, multi-technology cards and readers may be required as part of a transition plan. Each facility will also have to develop a roadmap explaining the path it will take to conform to the functional requirement.

A World of Requirements

Other functional security areas include video surveillance, intrusion and fire alarms, control center operations, and many more.

A possible functional requirement for video surveillance could be a desire that all camera coverage is recorded and automatically available to the Security Investigation department’s office for review and evaluation of cases.
A possible functional requirement for security central station(s) could incorporate a regional, business group or corporate-wide UL security control center(s) to monitor the alarm systems.

The key is that the functional requirements must be developed at the enterprise level, which will certainly effect the corporation’s culture, environment, employees, security requirements, existing electronic security systems and customers.

The Next Step: Security Surveys

After the functional requirements are developed for the corporation, the next step is to understand what electronic security functionality exists at each facility. A Security Survey should be sent to each facility or group of facilities that are under the oversight of a given Security manager, along with an explanation about the reasons for the survey.

The survey may, in and of itself, uncover additional functional requirements that need to be added to the list. The surveys help an electronic security expert to find the best solutions that are most cost-effective to achieve the functional requirements of the corporation. A spreadsheet developed from the surveys will illustrate the current status at each facility.

After the process of standardization begins, it is important to know and control any planned expenditure for electronic security equipment that could impact the enterprise functional requirements at a given facility to minimize additional cost.
With the survey results and the functional requirements in hand, a large corporation can finally begin to discover the best options for accomplishing its functional requirements.

Just like there is no single badge/access card technology that addresses all issues, there is no single way to accomplish a given functional requirement. The challenge for the security professional is finding the technology most suitable for said functional requirements. Solving functional requirements is more of an art form than it is a scientific method. Obviously science and technology are part of the solution, but the way the technologies are used and interconnected to achieve the functional requirement is more of a creative and intuitive process.

There are many other electronic security components that might also be addressed in the standardization process. Decisions will be made to determine if these components are an issue or not during the development of the functional requirements.
Back to the universal badge example: The cost of manufacturing and updating employee badge/access cards is a process that has substantial recurring year-after-year labor and material cost. After implementing the functional requirement of a universal employee badge/access card, cost savings will be realized on a continuing basis.

Robert Pearson holds a BSEE and is a Registered Professional Engineer. He has been an instructor at George Washington University, teaching “Integrated Security Systems” and “Corporate Security Management.” He has written numerous articles for various technical magazines and has recently published a book, “Electronic Security Systems.” On a day-to-day basis he oversees design, project management, and maintenance of security systems for multiple sites. He is a member of A/E National Standing Council for ASIS International.