US 12,135,364 B2
Beacon system
Eric A. Marks, Crystal, MN (US); Keaton F. Van't Hull, Minneapolis, MN (US); and Patrick M. Greenwell, Oakdale, MN (US)
Assigned to Target Brands, Inc., Minneapolis, MN (US)
Filed by Target Brands, Inc., Minneapolis, MN (US)
Filed on Oct. 12, 2021, as Appl. No. 17/498,974.
Prior Publication US 2023/0112510 A1, Apr. 13, 2023
Int. Cl. G01S 1/00 (2006.01); G01S 1/04 (2006.01); H04W 4/021 (2018.01); H04W 4/80 (2018.01)
CPC G01S 1/042 (2013.01) [G01S 1/047 (2013.01); H04W 4/021 (2013.01); H04W 4/80 (2018.02)] 19 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a processor;
a transceiver connected to the processor;
an integrated circuit connected to the processor;
a first proximity sensor configured to provide a first sensor input to the integrated circuit; and
a second proximity sensor configured to provide a second sensor input to the integrated circuit;
the processor is configured to set a timer after the integrated circuit determines that the first sensor input represents a first detection event, and when the timer expires before the integrated circuit determines that the second sensor input represents a second detection event, the processor is configured to send a message through the transceiver.