Method and device for indicating the state of EM or AM security tags
AssigneeCheckpoint Systems International GmbH
InventorsMichael Rapp, Manfred Rührig
Life of this patent
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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.
Claims14
A device for indicating a magnetization state of an EM security tag (1) or an AM security tag (25), comprising a first semi-hard or hard magnetic layer (11) and a second layer (13) arranged in close vicinity thereto, wherein said second layer (13) is sensitive to magnetic fields and configured such as to enable the magnetization state of the first layer (11) to be determined visually.
A method of determining the state of activation or deactivation of EM or AM security tags, characterized by the steps of
- attaching a device (9, 33) for indicating the state of EM or AM security lags (1, 25) to a packaging or a pallet containing merchandise equipped with EM or AM security tags (1, 25),
- simultaneously activating or deactivating all the security tags (1, 25) in the packaging or on the pallet and the device (9, 33) for indicating the state of EM or AM security tags (1, 25) in a device for activating or deactivating security tags (1, 25), and
- establishing the state of activation or deactivation of the EM or AM security tags (1, 25) in the packaging or on the pallet by reading the device (9, 33) for indicating the state of EM or AM security tags (1, 25), which enables the activation or deactivation state of the EM or AM security tags to be determined visually.
Dependencies are inferred from the claim text.