US 12,147,942 B1
RFID loss-prevention based on transition risk
Christopher J. Diorio, Shoreline, WA (US); and Alberto Pesavento, Seattle, WA (US)
Assigned to Impinj, Inc., Seattle, WA (US)
Filed by Impinj, Inc., Seattle, WA (US)
Filed on Sep. 1, 2023, as Appl. No. 18/459,476.
Application 18/459,476 is a continuation of application No. 17/592,598, filed on Feb. 4, 2022, granted, now 11,748,703.
Application 17/592,598 is a continuation of application No. 17/326,520, filed on May 21, 2021, granted, now 11,244,282, issued on Feb. 8, 2022.
Application 17/326,520 is a continuation of application No. 16/728,480, filed on Dec. 27, 2019, granted, now 11,017,349, issued on May 25, 2021.
Application 16/728,480 is a continuation of application No. 16/455,792, filed on Jun. 28, 2019, granted, now 10,521,768, issued on Dec. 31, 2019.
Application 16/455,792 is a continuation of application No. 15/811,554, filed on Nov. 13, 2017, granted, now 10,373,115, issued on Aug. 6, 2019.
Application 15/811,554 is a continuation of application No. 15/372,458, filed on Dec. 8, 2016, granted, now 9,818,084, issued on Nov. 14, 2017.
Claims priority of provisional application 62/265,189, filed on Dec. 9, 2015.
Int. Cl. G06Q 10/08 (2024.01); G06K 7/10 (2006.01); G06K 19/07 (2006.01); G06K 19/077 (2006.01); G06Q 10/087 (2023.01); G08B 13/24 (2006.01)
CPC G06Q 10/087 (2013.01) [G06K 7/10297 (2013.01); G06K 19/0705 (2013.01); G06K 19/07749 (2013.01); G08B 13/2485 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A Radio Frequency Identification (RFID) component for monitoring RFID-tagged items in a facility, the RFID component comprising:
an interface configured to receive replies originating from RFID tags; and
a processing block coupled to the interface and configured to:
cause a first inventory command to be transmitted, the first inventory command configured to cause tags in a first state to participate in a first inventory round;
receive, via the interface, a first reply from a first tag in the first inventory round;
determine, based on the first reply, that a first item associated with the first tag has a low transition risk;
cause, based on the low transition risk, the first tag to switch to a second state;
receive, via the interface, a second reply from a second tag in the first inventory round;
determine, based on the second reply, that a second item associated with the second tag has a high transition risk;
cause, based on the high transition risk, the second tag to remain in the first state;
cause a second inventory command to be transmitted, the second inventory command configured to cause tags in the first state to participate in a second inventory round;
receive, via the interface, a third reply from the second tag in the second inventory round;
determine, based on the third reply, that the second item has inappropriately left the facility, and
cause an alert to be issued.