| 摘要 |
A tamper-resistant indicator is disclosed. The indicator includes a front panel configured to be located on an outside surface of a door. The indicator also includes a back panel configured to be located on an inside surface of the door. The indicator also includes a turning indicator, including a springy living hinge, wherein said turning indicator has a front part disposed on the front panel and a back part disposed on the back panel, and the two parts communicate with each other via a rotatable axis or shaft member configured to pass through an opening bored through the door, and wherein the axis or shaft member is coupled between the front and back parts of the indicator, such that rotation of the back part of the indicator rotates the axis or shaft member, which in turn rotates the front part of the indicator.
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