Abstract: A method and system for protecting and controlling personal computers (“PCs”), components installed in or attached to PCs, and other electronic, mechanical, and electromechanical devices and systems. An exemplary embodiment of the system includes a server running on a remote computer and hardware-implemented agents embedded within the circuitry that controls the various devices within a PC. The agents intercept all communications to and from the devices into which they are embedded, passing the communications when authorized to do so, and blocking communications when not authorized, effectively disabling the devices. Embedded agents are continuously authorized from the remote server computer by handshake operations implemented as communications messages.

Abstract: A method and system for protecting and controlling personal computers (“PCs”), components installed in or attached to PCs, and other electronic, mechanical, and electromechanical devices and systems. An exemplary embodiment of the system includes a server running on a remote computer and hardware-implemented agents embedded within the circuitry that controls the various devices within a PC. The agents intercept all communications to and from the devices into which they are embedded, passing the communications when authorized to do so, and blocking communications when not authorized, effectively disabling the devices. Embedded agents are continuously authorized from the remote server computer by handshake operations implemented as communications messages.

Abstract: A method and system for protecting and controlling personal computers (“PCs”), components installed in or attached to PCs, and other electronic, mechanical, and electromechanical devices and systems. An exemplary embodiment of the system includes a server running on a remote computer and hardware-implemented agents embedded within the circuitry that controls the various devices within a PC. The agents intercept all communications to and from the devices into which they are embedded, passing the communications when authorized to do so, and blocking communications when not authorized, effectively disabling the devices. Embedded agents are continuously authorized from the remote server computer by handshake operations implemented as communications messages.

Abstract: A method and system for protecting and controlling personal computers (“PCs”) and components installed in or attached to PCs. The method and system may be used to protect PCs from use after being stolen. An exemplary embodiment of the system includes a server running on a remote computer and hardware-implemented agents embedded within the circuitry that controls the various devices within a PC. The agents intercept all communications to and from the devices into which they are embedded, passing the communications when authorized to do so, and blocking communications when not authorized, effectively disabling the devices. Embedded agents are continuously authorized from the remote server computer by handshake operations implemented as communications messages.

Abstract: The antennas of a cellular telephone system are each connected to a signal divider/combiner array which/divides combines the antenna connecting path(s) into a plurality of antenna-radio/radio-antenna connecting paths. The divider array aspect is used for signal reception and the combiner array aspect is used for signal transmission. Each of these antenna connecting paths is connected to a controllable switch which in turn selectively couples it to/from a second plurality of radio transceivers. The antenna transmission/receive paths comprising the signal divider/combiners are embodied as strip type transmission lines in a multi layer PCB with all the paths having equal transmission losses. Micro vias are provided to permit electrical access to the various layers. The controllable switches are surface mounted on the outside of the PCB and are coupled to the various dividers/combiner through the micro vias.