Patent ID: 9171246
Filing Date: 2015-10-27
Classification: G06K

Abstract:
1. A method for detecting that an object has been accessed, the method comprising: detecting a change in state of a signal emitted by at least one of a first signaling tag carried by a first surface or a second signaling tag carried by a second surface, the change in state resulting from the second surface being transitioned from a first position to a second position, wherein the first signaling tag is positioned on the first surface and the second signaling tag is positioned on the second surface such that when the second surface is in the first position, the first signaling tag and the second signaling tag are sufficiently proximate to each other such that a coupling occurs between the first signaling tag and the second signaling tag, whereby an antenna of at least one of the first signaling tag or the second signaling tag is at least partially detuned by the coupling, thereby resulting in a first signal state being emitted by at least one of the first signaling tag or the second signaling tag, and wherein when the second surface is transitioned from the first position to the second position, wherein transitioning from the first position to the second position increases the distance between the first signaling tag and the second signaling tag such that a decoupling between the first signaling tag and the second signaling tag results in the antenna of at least one of the first signaling tag or the second signaling tag no longer being at least partially detuned, thereby resulting in a second signal state being emitted by at least one of the first signaling tag or the second signaling tag; and in response to detecting the change in state, determining, by a processor, that an object associated with at least one of the first signaling tag or the second signaling tag has been accessed.