Lock bypass detection
AssigneeInternational Business Machines Corporation
InventorsChad M. Albertson, Eric J. Campbell, Nicholas J. Ollerich, Christopher W. Steffen
Life of this patent
Estimating the term…
Abstract
A lock system and method for alerting a user or other entity that a lock has been or is being tampered with is disclosed. The lock includes at least one enhanced security pin that is electrically isolated from the rest of the lock. When the lock picker attempts to pick the lock a portion of the enhanced security pin contacts either the plug or the outer casing of the lock to complete a circuit with an alert component. The completion of the circuit causes the alert component to generate an alert signal that can be observed by the user or other entity.
Claims14
A lock comprising:
- a plug, the plug having a keyway and a first plurality of shafts;
- an outer casing, the outer casing having a plug hole disposed in a center portion of the outer casing, the plug hole shaped to accept the plug into the outer casing, the outer casing further including a second plurality of shafts;
- a plurality of springs disposed within the second plurality of shafts, each of the second plurality of shafts having a single spring;
- a plurality of driver pins connected to a corresponding one of the plurality of springs, wherein at least one of the plurality of driver pins is an enhanced security pin, the enhanced security pin having a top portion and a bottom portion comprised of a non-conductive material and a center portion comprised of an electrically conductive material, wherein the enhanced security pin is a spool security pin wherein the top portion and the bottom portion are of equal size and the center portion has a diameter smaller than the diameter of the top portion and the bottom portion;
- a plurality of key pins connected to a corresponding one of the plurality of driver pins;
- a first wire disposed within the enhanced security pin;
- a second wire disposed within the plug;
- and
- an alert component connected to the first wire and the second wire such that when the center portion contacts a portion of either the plug or the outer casing an electrical circuit is completed between the first wire, the second wire and the alert component causing the alert component to generate an alert signal.
A method comprising:
- inserting a tool other than a key into a keyway of a lock;
- displacing a plurality of key pins and a plurality of driver pins within the lock by the tool, wherein at least one of the plurality of driver pins is an enhanced security pin;
- rotating a plug of the lock, where full rotation of the plug is prevented by the enhanced security pin contacting a portion of the plug or a portion of an outer casing of the lock, wherein the enhanced security pin does not align with a shear line, wherein the enhanced security pin has a top portion and a bottom portion comprised of a non-conductive material and a center portion comprised of an electrically conductive material, and wherein the top portion and the bottom portion are of equal size and the center portion has a diameter smaller than the diameter of the top portion and the bottom portion;
- completing a circuit between the enhanced security pin and an alert component;
- and
- generating an alert, by the alert component when the enhanced security pin contacts either the portion of the plug or the portion of the outer casing.
Dependencies are inferred from the claim text.