| 摘要 |
A reusable security tag is provided which is reversibly operable in a first magnetic condition to trigger a detector when the tag is within communication range of the detector, and a second magnetic condition in which the detector is not triggered when the tag is within communication range of the detector. The tag includes a visual indicator which has a first visual characteristic when the tag is in the first magnetic condition, and a second visual characteristic when the tag is in the second magnetic condition.
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