Card Access Concerns:

Access control software is designed to be used on a dedicated computer and may interfere or be interfered with by other software. Often access control software had coding that seizes certain memory addresses during operation. If those addresses are in use by another program, the conflict could damage one or both software programs.

Security technicians are trained in the installation, use and troubleshooting of access control software programs but not in commercial word processing, database management or accounting software. This is particularly worth noting if your access control computer is utilized for these other programs. Application software and data could become corrupted, partially deleted, or lost during the troubleshooting process. Although some manufacturers suggest that their programs are simple enough to operate in "resident memory", they do not come to your facility when a problem occurs. Over the years our experience has shown that, in the long run, a dedicated computer for controlling security systems is less problematic and more cost effective.

The use of graphics programs or action games has the effect of stealing memory on Windows computers. If computers are not regularly cleared by rebooting, memory loss could reasonably be expected to negatively impact the operation of the access control programs.


Both Virginia and Maryland now require special licensing for companies and employees engaged in the electronic security industry. Employees of security guard companies, investigative businesses, alarm companies, access control and surveillance systems companies or any electrical contractor working on any security system must be licensed. This means that each and every person employed by one of these companies and having access to client files must pass a background check in both jurisdictions. Once approved, the company is issued a special security license that must be renewed annually. Every employee must go through an extensive background investigation and attend training classes before being licensed. Licensed individuals are issued a Security ID card they are required to carry at all times.

We believe regulation of our industry is good for everyone. It helps us to find better employees and serves to protect your interests. If you see us on the job, please feel free to ask for an ID. You can check on companies licensed in Virginia on the Internet at: HTTP://PS.DCJS.STATE.VA.US or in Maryland by dialing: (410) 799-0191.

Customer Service:

At ESSI we are always interested in improving service to our customers. Our clients have helped us over the years by suggesting improvements on the way we do things. For example, we changed our sales proposal in response to a customer's suggestions, and recently, responded to a request to modify our letterhead to make the fax and telephone numbers more visible.

If you would like to offer any ideas or make comments on your experience with our office or field personnel please contact us.