A system, method, apparatus, and computer program product are provided for detecting that an object has been accessed. A system may include a first surface carrying a first signaling tag and a second surface carrying a second signaling tag. The first and second signaling tags may be positioned such that when the second surface is in a first position, the first signaling tag and the second signaling tag are sufficiently proximate to each other such that a coupling between the first signaling tag and the second signaling tag results in a first signal state being emitted by at least one of the signaling tags. When the second surface is transitioned from the first position to a second position, a decoupling between the first signaling tag and the second signaling tag may in a second signal state being emitted by at least one of the signaling tags.