Q: If I already have closed-circuit surveillance, can it be made to work with your system? Answer: Yes. All you would need to do is have the output from the cameras go to USB (or PCI-based) video capture devices on a computer system that has an Internet connection. If you want to maintain both configurations (closed-circuit and Internet-based), you can purchase splitting equipment to have the signal be sent to both the upload computer and the closed-circuit system.