Abstract: A system has tags communicating by means of low frequency (below 1 megahertz) with routers which in turn communicate with nameservers. The tags have IP addresses, either explicitly programmed into the tags or associated in a virtual way with the tags. Lookups analogous to domain lookups permit human-friendly inquiries of tag status and location. Static (battery-backed) RAM in a tag permits great versatility in the localized function of the tag.

Abstract: The system employs full transceivers, each having peer-to-peer, client/server, and IP networking capabilities, and covering open-area ranges of up to 100 feet. The system uses Low Frequency for data communications so it can achieve both low cost (less costly than many RF-ID tags) and long battery life (10-15 years). Additionally, since these tags have batteries, static RAM maybe be added at very low cost, as well as sensors, LED's displays etc. The system also employs a sidewinder that communicates to said tag regularly, said sidewinder keeps the IP address of said tag. The system also employs an embedded VPN. The VPN includes a suite of diagnostic tools that run on a laptop. The system also includes a visibility data server that communicates to the sidewinder by the VPN. The data server includes a virtual tag data base, said virtual tag data base updated by the sidewinder.

Abstract: The system employs full transceivers, each having peer-to-peer, client/server, and IP networking capabilities, and covering open-area ranges of up to 100 feet. The system uses Low Frequency for data communications so it can achieve both low cost (less costly than many RF-ID tags) and long battery life (10-15 years). Additionally, since these tags have batteries, static RAM maybe be added at very low cost, as well as sensors, LED's displays etc. The system also employs a sidewinder that communicates to said tag regularly, said sidewinder keeps the IP address of said tag. The system also employs an embedded VPN. The VPN includes a suite of diagnostic tools that run on a laptop. The diagnostic tools talk direct to the sidewinder, the tools read and program said tag providing the tools have correct IP address of the tag. The system also includes a visibility data server that communicates to the sidewinder by the VPN.

Abstract: Activities of individuals and the movements/usage of products are monitored in an operating room during a surgical procedure by disposing in the operating room a first transceiver operating in a long wavelength mode in which 99.99% or more of radiated energy is in the form of a magnetic field, for example 131 KHz. A distinguishable radio frequency-enabled identification tag is associated with each of a plurality of persons assigned to the surgical procedure, including for example, doctors, nurses, and/or the patient, and optionally with products to be monitored. A signal is transmitted from the first transceiver and responses from the identification tags are monitored. A log is created from the monitored responses indicative activities of each of the persons in the operating room or of movements of tagged products.

Abstract: Activities of individuals and the movements/usage of products are monitored in an operating room during a surgical procedure by disposing in the operating room a first transceiver operating in a long wavelength mode in which 99.99% or more of radiated energy is in the form of a magnetic field, for example 131 KHz. A distinguishable radio frequency-enabled identification tag is associated with each of a plurality of persons assigned to the surgical procedure, including for example, doctors, nurses, and/or the patient, and optionally with products to be monitored. A signal is transmitted from the first transceiver and responses from the identification tags are monitored. A log is created from the monitored responses indicative activities of each of the persons in the operating room or of movements of tagged products.

Abstract: A system has tags communicating by means of low frequency (below 1 megahertz) with routers which in turn communicate with nameservers. The tags have IP addresses, either explicitly programmed into the tags or associated in a virtual way with the tags. Lookups analogous to domain lookups permit human-friendly inquiries of tag status and location. Static (battery-backed) RAM in a tag permits great versatility in the localized function of the tag.

Abstract: A system uses an antenna at a portal, the antenna coupled to equipment which can send and receive information to and from radio tags, each having a unique identity. The equipment detects, for example, a tag attached to an asset. The equipment looks to see if an associated badge is in the detection area of the portal. If the badge and asset match, the user bearing the badge is permitted to exit the portal. Otherwise the user is not permitted to exit the portal. An asset such as a ski can be equipped with such a tag, the tag in this case being a low-frequency tag. The low-frequency tag permits locating the ski even if it is not visible because it is under snow.

Abstract: The system employs full transceivers, each having peer-to-peer, client/server, and IP networking capabilities, and covering open-area ranges of up to 100 feet. The system uses Low Frequency for data communications so it can achieve both low cost (less costly than many RF-ID tags) and long battery life (10-15 years). Additionally, since these tags have batteries, static RAM maybe be added at very low cost, as well as sensors, LED's displays etc. The system also employs a sidewinder that communicates to said tag regularly, said sidewinder keeps the IP address of said tag. The system also employs an embedded VPN. The VPN includes a suite of diagnostic tools that run on a laptop. The diagnostic tools talk direct to the sidewinder, the tools read and program said tag providing the tools have correct IP address of the tag. The system also includes a visibility data server that communicates to the sidewinder by the VPN.