Abstract: Devices are disclosed for the display of the “activated” or “deactivated” state of electromagnetic or acousto-magnetic security tags, whereby it is possible to recognize, at a glance, whether the goods, for example on a pallet, have activated or deactivated security tags.

Abstract: A configuration for minimizing and compensating for the Néel interaction between a first ferromagnetic layer and a second ferromagnetic layer on both sides of a nonmagnetic separating layer has an artificial anti-ferromagnetic layer system. The two ferromagnetic layers each being sublayers of an artificial anti-ferromagnetic layer system contribute to the minimization of the Néel interaction.

Abstract: The present invention relates to a strip for preparing security elements for electronic protection of goods including a carrier strip with adhesive labels detachably stuck on, or of interconnected tags to be fixed to goods which are to be labeled or protected. Only a certain number of labels or tags have electromagnetically active or activatable security elements. The strip demonstrates a substantially equal level of detection in different surveillance systems. To this end, the security elements consist of at least two types of security elements which are detectable in different surveillance systems.

Abstract: The present invention is directed to a method of manufacturing security elements for electronic article surveillance, the security elements being made of at least two layers, and to a security element manufactured according to the method The method comprises the steps of applying a first layer of a cellulose material in a still moist state to a second layer of a cellulose material, with soft magnetic elements which emit a characteristic signal in the interrogating field of an article surveillance system being added to one of the two layers; and subsequently die stamping or cutting out the desired shape of the security elements from the two layers in the dry state. The method provides a low cost manufacturing means for reliably operating security elements.

Abstract: A tape material (1) comprising a support layer (2) and a thin-layer magnetic material (3), which is placed onto the support layer (2), serves as a security material. In a surveillance zone the thin-layer magnetic material (3) emits a characteristic signal for the electronic surveillance of articles. The aim is to provide a tape material which allows for simple application of thin-layer materials on any support materials. To this end a transfer layer (4), which can be melted by pressure and/or heat, is provided for on the thin-layer material (3), and the adhesion between the support layer (2) and the thin-layer material (3) is less than the adhesion between the thin-layer material (3) and the transfer layer (4). Consequently, a hot-pressing die (7) may be utilized to transfer a desired area of the thin-layer material (3), via the transfer layer (4), onto the article (6a) or another support layer (6b).

Abstract: A system for the supply of forge-proof information about an article. The system has a first element characterized by an information content (I1) and a second element characterized by an information content (I2). Both elements are connected to the article. The two elements are linked to a logic connective where the information contents (I1) and (I2) are compared. One of the information contents relates to a statement as to whether the article is disposable or returnable.