Decreasing false alarms in RFID exit portals
US11721201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2022 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Apr 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/188
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.