"Business Security Systems & Access Control in Dallas & Fort Worth Dallas Security Systems, Inc. (DSS) is a locally owned security company that operates from areas in Dallas, Plano, Frisco, McKinney, and Rockwall, Texas, among others in the greater Dallas-Fort Worth area. Dallas Security Systems was founded in 1978 and has since provided the best in access control systems, video surveillance systems, business security systems, fire alarms, and 24/7 business monitoring systems to the commercial property owners of the DFW area. According to Security Distributing & Marketing Magazine (SDM), we consistently rank among the 40 largest security integrators in the United States. We are the largest independent security provider in DFW. Our Services: Access Control Systems Video Surveillance Systems Business Security Systems Fire Alarms 24/7 Business Monitoring Systems Intrusion Alarm Systems