In this book, an interface circuit was built to connect a mobile vehicle controller to a PC via its LPT, this PC was a node of a LAN with other PCs, and it was considered as a server, and the other PCs were considered as clients. Every PC in this LAN had the ability to control the mobile vehicle manually using either a keyboard or a mouse. A webcam was mounted on the vehicle and plugged in the USB of the server, this webcam was used to transfer video to the server then to the client via LAN. A security method was applied to all PCs in this LAN to access the control of the mobile vehicle, this...