05731757 is referenced by 367 patents and cites 7 patents.

A portable locator or tracking apparatus is provided for continuous location determination of subjects which communicates with a body-worn, non-removable, tamper resistant transceiver and a central data-base system. The portable tracking apparatus has a Global Position System (GPS) receiver and inertial sensors for determining location, microprocessors for logic and mathematical algorithm processing, memory for programs and data, a wireless transceiver for communications with the body-worn device, a wireless transceiver for communicating with the central data-base system, an alpha-numeric display for displaying text messages sent to the subject acoustic speaker and microphone for voice and tone messages with subjects, electronic tamper sensors, motion sensors, attitude position sensor, batteries and external connectors for power, recharge, communications and auxiliary antennas.

Title
Portable tracking apparatus for continuous position determination of criminal offenders and victims
Application Number
8/699619
Publication Number
5731757
Application Date
August 19, 1996
Publication Date
March 24, 1998
Inventor
Hoyt M Layson Jr
Palm Harbor
FL, US
Agent
Larson & Larson P A
Agent
Herbert W Larson
Assignee
Pro Tech Monitoring
FL, US
IPC
C08B 25/00
C08B 21/00
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