Systems and methods for dynamic field reduction based on a measured distance between a tag and a tag deactivator
US10255777B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2018 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jan 31, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2465
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Systems and methods for deactivating an Electronic Article Surveillance (“EAS”) security tag coupled to an item. The methods comprise: detecting a presence of the EAS security tag in proximity to a tag deactivator; determining a distance between the item and at least one deactivation coil of the tag deactivator, in response to a detection of the EAS security tag; dynamically adjusting a deactivation field strength setting of the tag deactivator based on the distance that was previously determined; and using the at least one deactivation coil to generate a deactivation field in accordance with the deactivation field strength setting which was previously dynamically adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.