This TechRadar defines the use cases, business value, and outlook for the 14 most relevant and important technologies for physical security. This includes core technologies, such as converged access cards, biometric access control, and unified crisis communications, as well as emerging technologies, such as video analytics, drones, and video surveillance-as-a-service. Security and risk (S&R) pros must determine how to use these technologies to protect customers, employees, and facilities without detracting from experience or hampering business flexibility.