Patent ID: 8231051

Claim:
A door security apparatus comprising: a door mountable variable voltage energy transceiver; control circuits coupled to the energy transceiver; and an access interface input line communicating with the control circuits, the control circuits couple indicia relative to an access credential to the door mountable transceiver, wherein the door mountable variable voltage energy transceiver receives induced power from a second displaced transceiver, and wherein the door mountable variable voltage energy transceiver transmits and receives communications information to and from the second displaced transceiver, wherein the door mountable variable voltage energy transceiver receives induced power from the second transceiver, and wherein the door mountable variable voltage energy transceiver transmits and receives communications information to and from the second transceiver when the transceivers exhibit a selected relationship to one another; and including circuitry to bypass the second transceiver when the two transceivers do not exhibit the selected relationship.