Abstract: In a wireless network that includes a plurality of nodes, a method of maintaining, by a first node, information regarding communications links between nodes in the wireless network includes: for each communications link that is established with another node, recording an identification of the other node; and for each message received by the first node from the other node through the communications link with the other node, recording a network pathway by which the message has been sent in the wireless network, the network pathway identifying the nodes and the communications links therebetween by which the message has been sent. Another method includes recording, by a server, for each message that is received by the server from the wireless network, a network pathway by which the message has been sent, the network pathway identifying the nodes and the communications links therebetween by which the message has been sent.

Abstract: A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second receiver that is configured to screen a radio frequency broadcast and provide, on the basis of specific data identified therein, the electronic signal to the LPRF communications component in order to power up the LPRF communications component. The second receiver is adapted to draw less current than the LPRF communications component while awaiting receipt of and listening for a radio frequency broadcast.

Abstract: A wireless data communications network system for establishing communication between a server and a plurality of containers that are loaded onto a cargo vessel. The system includes a data communications device configured to establish and manage a pre-configured wireless data communications network and to communicate with the server through a local area network, and a plurality of electronic tracking devices each having a wireless transceiver and routing capabilities and configured to be joined to a container and to connect to the wireless data communications network upon being activated. The data communications device is configured to intermittently perform a network scan to locate each tracking device connected to the network and reconfigure the network topology to include each connected tracking devices such that the data communications device maintains mutual communication with each connected tracking device using the routing capabilities of the tracking devices.

Abstract: A system for monitoring the contents of a closed container includes one or more sensors for monitoring the container contents, a signal receiving element positioned, and a processing system. The signal receiving element receives sensor data from the sensors. The processing system has a memory for storing predetermined conditions and a control element for analyzing received sensor data by comparing the received sensor data to stored predetermined conditions. The control element includes capabilities for declaring a security alert based on the comparison. The communications system includes a first transceiver inside the closed container for receiving signals containing sensor data from within the container and for transmitting those signals outside of the container, and a satellite transceiver, physically linked to the first transceiver and disposed outside the closed container, for receiving signals from the first transceiver and for forwarding the received signals via satellite uplink to a remote location.

Abstract: A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second receiver that is configured to screen a radio frequency broadcast and provide, on the basis of specific data identified therein, the electronic signal to the LPRF communications component in order to power up the LPRF communications component. The second receiver is adapted to draw less current than the LPRF communications component while awaiting receipt of and listening for a radio frequency broadcast.

Abstract: A RF data communication device operates in at least two states. In a first state, the device transmits a response to an RF transmission if specific data therein represents an inquiry as to the presence of one or more RF data communication devices and if specific data therein corresponds to a class maintained by the device. The device does not transmit a response if specific data in the RF transmission is not representative of an inquiry as to the presence of one or more RF data communication devices, or if specific data therein does not correspond to at least one maintained class. In a second state, the device does not transmit a response when specific data is included therein that is representative of an inquiry as to the presence of one or more RF data communication devices and specific data therein corresponds to at least one maintained class.

Abstract: A RF data communication device operates in at least two states. In a first state, the device transmits a response to an RF transmission if specific data therein represents an inquiry as to the presence of one or more RF data communication devices and if specific data therein corresponds to a class maintained by the device. The device does not transmit a response if specific data in the RF transmission is not representative of an inquiry as to the presence of one or more RF data communication devices, or if specific data therein does not correspond to at least one maintained class. In a second state, the device does not transmit a response when specific data is included therein that is representative of an inquiry as to the presence of one or more RF data communication devices and specific data therein corresponds to at least one maintained class.

Abstract: The system described here is a bolt-type seal lock which includes a bolt, having a shaft with proximal and distal portions and a head that is wider than the distal portion of the shaft and located at the proximal portion of the shaft; a locking body having a passageway with an open end for receiving and retaining the distal portion of the shaft of the bolt in locking engagement after the shaft has been inserted a predetermined extent into the open end of the passageway, at which point the shaft cannot be withdrawn from the open end of the passageway; and a housing connected to, and rotatable relative to, the locking body, configured to be removably mounted to a door of a shipping container, thereby preventing swinging motion of the locking body. The housing contains electronics, including memory, a wireless communication component, and a power source.

Abstract: A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second receiver that is configured to screen a radio frequency broadcast and provide, on the basis of specific data identified therein, the electronic signal to the LPRF communications component in order to power up the LPRF communications component. The second receiver is adapted to draw less current than the LPRF communications component while awaiting receipt of and listening for a radio frequency broadcast.

Abstract: A method of forming ad hoc RSI hierarchical communication networks among pluralities of wireless transceivers includes assigning to each of the transceivers one or more common designations. A network organization routine of the transceivers operates to establish hierarchical networks based on the transceivers' common designations, resulting in a logical network organization that provides efficiencies for acquiring information from particular transceivers that share a common designation. Each transceiver's common designation is used by a digital processor of the transceiver to selectively receive data packets that are intended for receipt by transceivers sharing the particular common designation. Such a “common designation” network reduces power consumption and signal interference thereby increasing battery life.

Abstract: In a wireless network that includes a plurality of nodes, a method of maintaining, by a first node, information regarding communications links between nodes in the wireless network includes: for each communications link that is established with another node, recording an identification of the other node; and for each message received by the first node from the other node through the communications link with the other node, recording a network pathway by which the message has been sent in the wireless network, the network pathway identifying the nodes and the communications links therebetween by which the message has been sent. Another method includes recording, by a server, for each message that is received by the server from the wireless network, a network pathway by which the message has been sent, the network pathway identifying the nodes and the communications links therebetween by which the message has been sent.

Abstract: A wireless radio frequency data communication device includes memory in which is stored a common designation; a radio frequency transmitter component and receiver component for wirelessly sending and receiving data packets; and electronics for processing data. The device is configured to filter a wireless communication received by it for an identification of its common designation within the communication, and process the communication if an identification of its common designation is found therein, and not process the communication if an identification of its common designation is not found therein. The device includes a profile stored in its memory and is configured to automatically and dynamically change its common designation in accordance with its profile. The profile may include a plurality of common designations, which may be conditional. The foregoing common designations may be class designations for use in class-based asset tracking systems.

Abstract: A method of forming ad hoc RSI hierarchical communication networks among pluralities of wireless transceivers includes assigning to each of the transceivers one or more common designations. A network organization routine of the transceivers operates to establish hierarchical networks based on the transceivers' common designations, resulting in a logical network organization that provides efficiencies for acquiring information from particular transceivers that share a common designation. Each transceiver's common designation is used by a digital processor of the transceiver to selectively receive data packets that are intended for receipt by transceivers sharing the particular common designation. Such a “common designation” network reduces power consumption and signal interference thereby increasing battery life.

Abstract: A method for determining a terrestrial location of an apparatus that is deployed in a generally known geographical region includes capturing, by the apparatus, an earthbound image of the sky from a terrestrial location at an identified time; communicating, by the apparatus, data representative of the captured earthbound image of the sky; and determining the terrestrial location of the apparatus based on the data communicated by the apparatus by comparing the captured earthbound image of the sky to a master mapping of the sky relative to the surface of the Earth.

Abstract: A radio frequency communication device includes a receiver; a transmitter; an interface for receiving one or more sensor signals based on sensor-acquired data that is indicative of a predetermined condition; and electronic components. The electronic components are arranged and configured such that the device operates in at least two states. In the first state, the device responds to a Present Broadcast by making a Present Response. In the second state, the device does not respond to a Present Broadcast with a Present Response. The electronic components further are arranged and configured such that the device enters the second state from the first state upon responding to a Present Broadcast with a Present Response, and such that the device enters the first state from the second state upon receiving, through the interface, one or more sensor signals based on sensor-acquired data that is indicative of a predetermined condition.

Abstract: A RF data communication device operates in at least two states. In a first state, the device transmits a response to an RF transmission if specific data therein represents an inquiry as to the presence of one or more RF data communication devices and if specific data therein corresponds to a class maintained by the device. The device does not transmit a response if specific data in the RF transmission is not representative of an inquiry as to the presence of one or more RF data communication devices, or if specific data therein does not correspond to at least one maintained class. In a second state, the device does not transmit a response when specific data is included therein that is representative of an inquiry as to the presence of one or more RF data communication devices and specific data therein corresponds to at least one maintained class.

Abstract: The system described here is a bolt-type seal lock which includes a bolt, having a shaft with proximal and distal portions, a head that is wider than the distal portion of the shaft and located at the proximal portion of the shaft, and a microchip that electronically contains a unique serial number of the bolt; and a locking body having a passageway with an open end for receiving and retaining the distal portion of the shaft of the bolt in locking engagement after the shaft has been inserted a predetermined extent into the open end of the passageway, at which point the shaft cannot be withdrawn from the open end of the passageway. The locking body contains electronics, including memory for storing data, wireless communications equipment, and a power source, configured to read and store the serial number form the microchip after the locking engagement.

Abstract: The system described here is a system for monitoring security of shipping containers, which includes: a plurality of shipping containers, each having a bolt-type seal lock module, and a sensor module mounted to an interior surface of the shipping container, configured to wirelessly communicate data over an external network; and a centralized computer database configured to receive data over the network that is external to the shipping containers from the plurality of shipping containers, by which data the security of the shipping containers is monitored.

Abstract: The system described here is a shipping container security system including a bolt-type seal lock module located on an exterior surface of a door of a shipping container; and a sensor module mounted to an interior surface of the shipping container. The bolt-type seal lock module and the sensor module are configured to wirelessly communicate data therebetween.

Abstract: The system described here is a bolt-type seal lock which includes a bolt, having a shaft with proximal and distal portions and a head that is wider than the distal portion of the shaft and located at the proximal portion of the shaft; a locking body configured to receive and retain the shaft in locking engagement after the shaft has been inserted a predetermined extent into an open end of a passageway of the locking body; and a component connected to the locking body such that the component and locking body are rotatable relative to each other, the component configured to be removably mounted to a door of a shipping container, whereby the locking body does not freely swing on the distal portion of the shaft of the bold during movement of the shipping container.