Liquid crystal display (LCD) monitors, namely, for use with a palm-sized device with color LCD display and wireless communication module for viewing photographs or videos captured from networking camera in a limited area, such as home, store and warehouse; computer programs for use in data duplication, storage and management on optical or magnetic disks; computer software for use in network communication; firewall software used in network apparatus; computer hardware, namely, digital image storage devices for use in networking and storage; computer interface cards; video recorder for surveillance, namely, for use in both video compression and storage functions; digital camcorders; digital cameras; internet cameras, namely, for use in networking to view video stream with pre-defined security mechanism, satellite television receiver; image splitter, namely, computer hardware and software for processing and manipulating multiple video streams from display device simultaneously; optical communication devices, namely, an optical transmitter/receiver mainly for video/audio communications; telephone intercoms; video phones; video conference devices, namely, telephones, internet phones allowing communications both visually and audibly; internet phones; antennas; multiplexers; computer screen filters; audio sound signal mixers, namely, signal boosters for use in allowing video and audio signals to be re-generated after long distance transmission; communication servers; computer network routers; global positioning system (GPS) consisting of computers, computer software, transmitters, receivers, and network interface devices