Patent ID: 6427913
Filing Date: 2002-08-06
Classification: G06K,G07B,G08B

Abstract:
A system for tracking movement of objects in a predefined area, said system comprising:a central controller; a readable tag on each object to be tracked, each readable tag comprising a radio frequency (RF) tag storing a code identifying a corresponding object; readers at pre-selected locations within said predefined area for reading the codes of said readable tags as the objects corresponding to said readable tags move past said readers; a communications link between said readers and said central controller for communication of codes read by said readers to said central controller; said controller being programmed to collect data from said readers for tracking the movement of objects within the predefined area; and further comprising at least two RF tags disposed in each object, said central controller being programmed to determine a direction of movement of the object by analyzing data collected by said readers from said at least two RF tags.