Certain aspects of the present disclosure provide an apparatus comprising a battery encapsulated within a sealed enclosure, an electronic device encapsulated within the sealed enclosure, a power control circuit encapsulated within the sealed enclosure, and a loop of conductive medium connected to the power control circuit. The electronic device is in a deactivated state. At least a portion of the loop of conductive medium passes out of and back into the sealed enclosure. In response to severing of the at least portion of the loop of conductive medium which is outside of the sealed enclosure, the power control circuit is configured to cause activation of the electronic device.