Patent ID: 7242322

Claim:
A security tracker for use with and in combination with a tractor-trailer comprising: a) a peripheral controller and a basic locator unit covertly mounted in a tail light of said trailer; b) said basic locator unit having a main controller and a GPS module, said main controller communicating with said GPS module for initiating a locator sequence whose location data is stored for later download or transmitted to a remote location; c) said peripheral controller having external input/outputs for communicating with sensing devices in a protected environment within said trailer; d) multiple communication lines between said peripheral controller and said main controller using pulses of short and long durations creating a finite number of different combinations of said pulses interpreted by said main controller as different commands; e) said security tracker being programmed to record for later download or initiate a communication with a remote location when the trailer is connected to said tractor, when the trailer is disconnected from said tractor, when the trailer door is opened while the trailer is disconnected, and transmitting location information under prescribed situations; and f) said trailer being provided with a decoy antenna.