The merchant to be used in a system of inspection of articles, electronics, measurement and inspection system for electronic articles, method for defectar presence of an article in a zone of interrogacao,Method of production of a marker to be used in such a system, and a system eas

摘要

A marker for use in an electronic article surveillance system in which the marker comprises a magnetically soft component and exhibits a pinned wall hysteresis characteristic with a step change in flux at a threshold value of applied field and in which the marker further comprises a magnetically hard or semi-hard component integral with the soft component and whose magnetic state can be switched between activating and deactivating states to switch the marker between active and deactive states.