Video-surveillance systems based on Internet protocols; electronic control units for surveillance systems based on Internet protocols; software for video-surveillance systems based on Internet protocols; biometric face recognition systems; electronic systems for recognition of licence plates of vehicles; systems based on Internet protocols, including electronic control units and software, for remotely managing and controlling the pedestrian and vehicular access to buildings and building areas; systems based on Internet protocols, including electronic control units and software, for remotely managing and controlling the traffic on lifts of buildings; systems based on Internet protocols, including electronic control units and software, for remotely registering and authenticating the pedestrian and vehicular access to buildings, as well as booking parking lots thereof; video intercom systems based on Internet protocols; video intercom monitors; access control and alarm monitoring systems; biometric access control systems; biometric fingerprint scanners; biometric voice recognition systems; electronic circuit boards; electronic key cards; electronic identification cards; chip card readers; electronic card readers; flash memory card readers; card readers for magnetically encoded cards; electronic access control systems for interlocking doors; computer application software for cellular phones; motion sensors; infrared sensors; position sensors; proximity sensors; acoustic alarms; security alarms; sirens; burglar alarms; electronic burglar alarms; theft prevention installations, electric; control panels for security alarms; anti-intrusion alarms; electronic surveillance apparatus; monitoring apparatus, electric; video surveillance systems; liquid crystal display (LCD) monitors; video monitors; video surveillance cameras; closed circuit television cameras; television cameras; electric and electronic video surveillance installations; camcorders; digital video cameras; video screens; audio- and video-receivers; video equipment; video recording apparatus; video transmission apparatus; video playback apparatus; digital video recorders; video circuit boards; computer software for transmission of sound and video messages; video camera stands; wireless receivers; video receivers; digital transmitters; wireless transmitters; computer network hubs, switches and routers; application software; interface circuits for video cameras; sound and image recording apparatus; sound recording apparatus; apparatus for recording images; digital recording media; computer software for controlling the operation of audio and video devices