Patent ID: 9613333
Date: 2017-04-04
CPC Classifications: G06K,G06Q

Claim:
1. An RFID-based inventory management system of a type including an RFID reader, comprising: an RFID-readable product tag associated with a piece of merchandise; a plurality of RFID-readable infrastructure tags having unique identities associated with fixed locations on a storage or display areas capable of sending signals to and receiving return signals from RFID readable tags; a system controller associated with the RFID reader such that the system controller is either programmed to require two or more of the infrastructure tags to be detected by the RFID reader in a particular sequence, or the system controller dictates an order in which the infrastructure tags are to be read for a proper count; and where the system controller is programmed to determine a location of the product tag based on times at which the RFID reader receives the return signals from the product tag and the infrastructure tag.