US Patent 11403928 System, method and apparatuses for electronic article surveillance

A method, system and devices of controlling an electronic article surveillance tag in an electronic article surveillance system, the tag including a detector for detecting tampering, the system including a positioning sub-system for determining a position of said tag and a control sub-system for controlling operation of said system. A first status message may be received from the electronic article surveillance tag to the control sub-system over a communications connection at a first time instance, and a first state of the tag may be determined by the control sub-system based on the first status message. The first state may be stored in a memory. A first control message may be sent from the control sub-system to the tag, the control message being formed based on the first state, and the operation of the tag may be altered based on the first control message.