Abstract: A secure, networked portable storage device includes: a secure data storage section; a program storage section including a security program operatively connected to the secure data storage section, wherein the security program is operable to selectively enable and disable access to the secure data storage section; a device antenna operable at a low radio frequency not exceeding one megahertz; a transceiver operatively connected to the device antenna, the transceiver operable to receive radio signals at the low radio frequency and generate data signals at the said low radio frequency, in response thereto; a programmable microprocessor operatively coupled with the transceiver and the program storage section, the microprocessor configured for controlling operation of the program storage section and to cause the transceiver to emit an identification signal; and a connector for enabling an electrical connection between the portable storage device and another device, wherein the connector and the secure data storag

Abstract: A system for tracking weapon health includes a low frequency networked radio tag coupled with a firearm, said radio tag configured to receive and send data signals; a reader configured to be in operative communication with the tag antenna; and a display configured to display data relating to weapon health. The radio tag includes a shot sensor, a shot count register for tracking the number of shots fired and cadence registers for tracking the intervals between shots.

Abstract: A networked card for identifying and tracking animate and inanimate objects and personnel, the card including: a radio frequency modem operable at a low radio frequency not exceeding one megahertz, the modem including a full duplex transmitter and receiver; a loop antenna operatively coupled with the radio frequency modem, the antenna operable within a range of hundreds of feet; a programmable microprocessor operatively coupled with the radio frequency modem and fully programmable within a network; a memory operatively coupled with the programmable microprocessor, the memory holding identification data; and a battery for providing power to the microprocessor.

Abstract: A pedigree tag for tracking and validating authenticity of contents in a container includes: a radio frequency modem operable at a low radio frequency, not exceeding one megahertz, and including a full duplex transmitter and receiver; an antenna operatively coupled with the radio frequency modem; a programmable microprocessor operatively coupled with the radio frequency modem; a memory operatively coupled with the programmable microprocessor; a clock; and a connector for connecting a power source for providing power to the microprocessor; wherein the pedigree tag is in a form factor conformable to the container to which it is affixed.

Abstract: A lifecycle management system for detection and tracking of drillpipes which carry low radio frequency tags that comprise an inductive antenna and transceiver operable at a first radio frequency below 1 megahertz, a transceiver operatively connected to that antenna, an ID data storage device, a microprocessor for handling data from the transceiver and data store, and a tag energization inductive antenna which can receive radio frequency energy from an ambient radio frequency field of a second low radio frequency. The system includes a field communication inductive antenna disposed, preferably at a distance of several feet from each object, that permits effective communication therewith at the aforesaid first radio frequency, a data receiver, transmitter and reader data processor in operative communication with the field communication inductive antenna, and a field energization inductive antenna which can produce the ambient radio frequency field at the tag energization inductive antenna.

Abstract: A low frequency inductive two-way radio transceiver tag is provided that has separate antennas for transmitting and receiving signals within a reading volume. Thus, the tag of the invention includes both a transmit antenna and a receiving antenna, either separately or as a single antenna tuneable between two functional states with different impedances. The impedance of the receiving antenna is greater than the impedance of the transmitting antenna. For example, the impedance of the receiving antenna may be greater than the impedance of the transmitting antenna by a factor of 103.

Abstract: A security tag affixed to a mobile phone for monitoring, tracking, and securing the mobile phone within a protected region. The security tag includes: a tag antenna operable at a low radio frequency not exceeding one megahertz; a tag transceiver operatively connected to the device antenna, the transceiver operable to receive radio signals at the low radio frequency and generate data signals at the said low radio frequency, in response thereto; and a microcontroller operatively coupled with the transceiver, the microcontroller being configured to cause the transceiver to emit a signal when the mobile phone is exiting the protected region.

Abstract: Identification and tracking of hollow pipes at a site where the hollow pipes are to be stored or interconnected, such as an oil drilling site where the aforesaid hollow pipes are to be connected and the drillstring of pipes is to be inserted into a drilled hole on solid ground or under a deepsea drilling platform is achieved. Each hollow pipe is provided with a low frequency radio frequency identification (RFID) tag attached to the pipe's outer surface. The RFID tag is operable at a low radio frequency not exceeding 1.0 megahertz and may be disposed within a recess in the pipe's outer surface. A tracking system provides communication be the tags and a reader.

Abstract: A system for identifying, monitoring, and tracking a firearm includes: a low frequency radio tag affixed to the firearm, the radio tag configured to receive and send data signals, the radio tag including: a tag antenna operable at a low radio frequency not exceeding 450 kilohertz, a transceiver operatively connected to the tag antenna, the transceiver configured to transmit and receive data signals at the low radio frequency; a data storage device configured to store data including identification data for identifying the firearm, and a data processor configured to process data received from the transceiver and the data storage device and to transmit data to cause the transceiver to emit an identification signal based upon the identification data stored in the data storage device.

Abstract: A method for identifying, tracking, and monitoring a firearm includes steps of: attaching a low frequency radio tag to the firearm; storing, in the data storage device of the radio tag, identification data relating to the firearm; and reading the identification data from the transceiver by interrogating the radio tag. The radio tag includes a shot sensor, a shot count register for tracking the number of shots fired and cadence registers for tracking the intervals between shots.

Abstract: A system for tracking weapon health includes a low frequency networked radio tag coupled with a firearm, said radio tag configured to receive and send data signals; a reader configured to be in operative communication with the tag antenna; and a display configured to display data relating to weapon health. The radio tag includes a shot sensor, a shot count register for tracking the number of shots fired and cadence registers for tracking the intervals between shots.

Abstract: A method for providing real-time visibility on a construction project includes steps of: attaching a low-frequency, ultra low-power, two-way transceiver radio tag to each construction material to be used in the construction project; storing data relating to the construction material in the tag; and reading the data from the transceiver of the tag by interrogating the radio tag with radio frequency interrogation signals.

Abstract: A pedigree tag for tracking and validating authenticity of contents in a container includes: a radio frequency modem operable at a low radio frequency, not exceeding one megahertz, and including a full duplex transmitter and receiver; an antenna operatively coupled with the radio frequency modem; a programmable microprocessor operatively coupled with the radio frequency modem; a memory operatively coupled with the programmable microprocessor; a clock; and a connector for connecting a power source for providing power to the microprocessor; wherein the pedigree tag is in a form factor conformable to the container to which it is affixed.

Abstract: Passive tags use two antennas with only limited mutual coupling, one of which receives a power/clock field and the other of which receives a data signal. An area-reading antenna, or two or more antennas, are deployed to generate the power/clock field, from a base station. The base station, or active tags, or both, generate the data signals from time to time. This topology together with the use of low frequencies permits area reads, and permits small and economical passive tags, and further permits localization of a particular passive tag as being nearby to a particular active tag.

Abstract: A system uses a large loop antenna, connected with a transceiver operating below 1 MHz. The loop antenna is deployed from a spool to surround a crime scene, and may carry indicia communicating that it is a crime scene boundary. The system interrogates devices, including evidence bags and badged personnel, as they enter and leave the scene. The system can optionally log the time of salient events. A second loop antenna can log evidence bags as they enter a vehicle. The devices can be silenced by the transceiver and thus collisions can be reduced and avoided among responses from devices. The system performs “area reads” that would not be possible if higher RF frequencies were employed.

Abstract: A system and associated tag for detecting and tracking people makes use of a low radio frequency detection tag. Each tag comprises an antenna operate at a at a low radio frequency not exceeding 1 megahertz, a transceiver connected to the tag's antenna operable to transmit and receive data signals at low radio frequency, a data storage for storing the tag identification data, a data processor operable to process data received from the transceiver and the data storage device and causes the transceiver to emit an identification signal based upon the stored identification data, and an energy source to supply power for the operation of the tag's transceiver and data processor. The tag also includes a display operable to display data relating to the tag and to a person carrying said tag. A field antenna is used with a reader, a transmitter and a central data processor to provide communication between the tags and the central data processor.

Abstract: A lifecycle management system for detection and tracking of drillpipes which carry low radio frequency tags that comprise an inductive antenna and transceiver operable at a first radio frequency below 1 megahertz, a transceiver operatively connected to that antenna, an ID data storage device, a microprocessor for handling data from the transceiver and data store, and a tag energization inductive antenna which can receive radio frequency energy from an ambient radio frequency field of a second low radio frequency. The system includes a field communication inductive antenna disposed, preferably at a distance of several feet from each object, that permits effective communication therewith at the aforesaid first radio frequency, a data receiver, transmitter and reader data processor in operative communication with the field communication inductive antenna, and a field energization inductive antenna which can produce the ambient radio frequency field at the tag energization inductive antenna.

Abstract: A system for detection and tracking of objects which carry low radio frequency tags that comprise an inductive antenna and transceiver operable at a first radio frequency below 1 megahertz, a transceiver operatively connected to that antenna, an ID data storage device, a microprocessor for handling data from the transceiver and data store, and a tag energization inductive antenna which can receive radio frequency energy from an ambient radio frequency field of a second low radio frequency. The system includes a field communication inductive antenna disposed, preferably at a distance of several feet from each object, that permits effective communication therewith at the aforesaid first radio frequency, a data receiver, transmitter and reader data processor in operative communication with the field communication inductive antenna, and a field energization inductive antenna which can produce the ambient radio frequency field at the tag energization inductive antenna.

Abstract: A system for detection and tracking of objects which carry low radio frequency tags that comprise an inductive antenna and transceiver operable at a radio frequency below 1 megahertz, a transceiver operatively connected to that antenna, an ID data storage device, a microprocessor for handling data from the transceiver and data store, and an energy harvesting device to capture energy from an energy condition at said object. The system includes a field communication inductive antenna disposed, preferably at a distance of several feet from each object, and at an orientation that permits effective communication with the tag antennas at the aforesaid radio frequency, a data receiver, transmitter and reader data processor in operative communication with the field communication inductive antenna. The aforesaid tag communication inductive antenna may have a ferrite core to enhance data reception.

Abstract: A system uses a large loop antenna, connected with a transceiver operating below 1 MHz. The loop antenna is deployed from a spool to surround a crime scene, and may carry indicia communicating that it is a crime scene boundary. The system interrogates devices, including evidence bags and badged personnel, as they enter and leave the scene. The system can optionally log the time of salient events. A second loop antenna can log evidence bags as they enter a vehicle. The devices can be silenced by the transceiver and thus collisions can be reduced and avoided among responses from devices. The system performs “area reads” that would not be possible if higher RF frequencies were employed.