Radio frequency identification (RFID) tag stray alarm mitigation

A non-transitory computer-readable device having instructions thereon that, when executed by at least one computing device, causes the at least one computing device to perform operations comprising:

• determining, by a processor of an EAS system, a chatter score of a radio frequency identification (RFID) identification of a RFID tag that generated one or more RFID readings at one or more RFID readers, wherein the chatter score represents an amount of detected noise in the one or more RFID readings associated with the RFID identification;
• designating, by the processor of the EAS system, the RFID tag as a stray tag responsive to the chatter score being above a chatter score threshold;
• omitting, by the processor of the EAS system, the RFID tag designated as the stray tag from further processing;
• selecting, by the processor of the EAS system, the RFID identification based at least in part on the chatter score being below the chatter score threshold;
• determining, by the processor of the EAS system, that the RFID identification corresponds to a RFID tag in motion;
• and
• triggering, by the processor of the EAS system, an alarm based on a determination that the RFID tag identified by the RFID identification is not authorized to leave a controlled area associated with the one or more RFID readers.

An electronic article surveillance (EAS) system, comprising:

• a plurality of radio frequency identification (RFID) readers;
• a RFID tag associated with a RFID identification;
• a memory storing instructions thereon;
• and
• at least one processor coupled with the memory and configured by the instructions to:
• determine a chatter score of the RFID identification of the RFID tag that generated one or more RFID readings at one or more RFID readers of the plurality of RFID readers, wherein the chatter score represents an amount of detected noise in the one or more RFID readings associated with the RFID identification;
• designate the RFID tag as a stray tag responsive to the chatter score being above a chatter score threshold;
• omit the RFID tag designated as the stray tag from further processing;
• select the RFID identification based at least in part on the chatter score being below the chatter score threshold;
• determine that the RFID identification corresponds to a RFID tag in motion;
• and
• trigger an alarm based on a determination that the RFID tag identified by the RFID identification is not authorized to leave a controlled area associated with the one or more RFID readers.

A method of electronic article surveillance (“EAS”), comprising:

• determining, by a processor of an EAS system, a chatter score of a radio frequency identification (RFID) identification of a RFID tag that generated one or more RFID readings at one or more RFID readers of a plurality of RFID readers of the EAS system, wherein the chatter score represents an amount of detected noise in the one or more RFID readings associated with the RFID identification;
• designating, by the processor of the EAS system, the RFID tag as a stray tag responsive to the chatter score being above a chatter score threshold;
• omitting, by the processor of the EAS system, the RFID tag designated as the stray tag from further processing;
• selecting, by the processor of the EAS system, the RFID identification based at least in part on the chatter score being below the chatter score threshold;
• determining, by the processor of the EAS system, a plurality of input values for the RFID tag, each input value of the plurality of input values corresponding to a temporal and/or sessional feature associated with a machine learning model;
• filtering, by the processor of the EAS system, the RFID tag for passing the RFID tag to a next stage or ceasing further processing of the RFID tag responsive to a result of determining whether the RFID tag is in motion or stationary that is based at least in part on the plurality of input values and the machine learning model;
• and
• triggering, by the processor of the EAS system, an alarm based on a determination that the RFID tag identified is moving and is not authorized to leave a controlled area associated with one or more of the plurality of RFID readers.