Patent ID: 9361777
Filing Date: 2016-06-07
CPC Classification: G06K,G06Q,G08B

Claim Text:
1. A method of tracking inventory, the method comprising the steps of: providing a first antenna proximate an opening of a structure; defining an imaginary plane parallel to the opening in a wall of the structure; defining an imaginary opening line orthogonal to the imaginary plane; defining a first imaginary line extending longitudinally through the first antenna; orienting the first antenna such that the first imaginary line is between a 25 and 35 degree angle from the imaginary opening line; providing a second antenna proximate the opening; emanating a signal from an item; moving the item past the first antenna and measuring a first signal strength of the signal as the item moves past the first antenna; determining a first time when the first signal strength peaks; moving the item past the second antenna and measuring a second signal strength of the signal as the item moves past the second antenna; determining a second time when the second signal strength peaks; and comparing the first time and the second time to determine an actual direction the item moved past the first antenna and second antenna; and providing the actual direction to an inventory tracking system.