	US 11,721,201 B2
	Decreasing false alarms in RFID exit portals
Eric Floyd Riggert, Trabuco Canyon, CA (US); Michael Sansur, Modjeska, CA (US); and Adam S. Bergman, Boca Raton, FL (US)
Assigned to SENSORMATIC ELECTRONICS, LLC, Boca Raton, FL (US)
Filed by Sensormatic Electronics, LLC, Boca Raton, FL (US)
Filed on Apr. 7, 2022, as Appl. No. 17/715,598.
Application 17/715,598 is a continuation of application No. 17/024,411, filed on Sep. 17, 2020, granted, now 11,315,409.
Claims priority of provisional application 62/902,252, filed on Sep. 18, 2019.
Prior Publication US 2022/0230531 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G08B 29/18 (2006.01); G08B 13/24 (2006.01); G06K 7/10 (2006.01)

CPC G08B 29/185 (2013.01) [G06K 7/10475 (2013.01); G08B 13/246 (2013.01)]

21 Claims

1. A method of electronic article surveillance (EAS), comprising:

transmitting a radio frequency identification (RFID) interrogation signal into an RFID interrogation zone of an EAS system;

detecting at least one response signal from a first RFID tag of the EAS system responding to the interrogation signal;

capturing, at one or more times in a window of time around the detection, motion sensor data within a sensor field, the sensor field and the RFID interrogation zone overlapping to form a zone of interest;

first determining, based on the captured motion sensor data, whether motion of a non-tag object in the zone of interest and in the window of time was detected; and

suppressing an alarm associated with the first RFID tag based on determining that motion of a non-tag object in the zone of interest was not detected.