Decreasing false alarms in RFID exit portals

US11315409B2 · kind B2 · utility

Assignee

• Sensormatic Electronics, LLC · US

Inventors

• Eric Riggert · Trabuco Canyon, US
• Michael Sansur · Modjeska, US
• Adam S. Bergman · Boca Raton, US

Key dates

• Filing date: Sep 17, 2020
• Grant date: Apr 26, 2022
• Expiry date: Nov 5, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G08B29/188
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Transmitting a radio frequency identification (RFID) interrogation signal into an RFID interrogation zone of an Electronic Article Surveillance (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, sensor data within a sensor field, the sensor field and the RFID interrogation zone overlapping to form a zone of interest. Characterizing movement of a non-tag object during the window of time based on the captured sensor data. Determining whether the first RFID tag is associated with the characterized non-tag object based on a comparison of the at least one response signal and the characterized movement of the non-tag object.