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A jimmy proof lock unlocks like almost any other lock. The difference is that the design of this lock is that it is a surface-mounted deadbolt. Instead of having the bolt be secured within the door and its jamb, the bolt hooks into a separate mount that is placed on the exterior of the frame….
If you live in a multi-unit building, there’s a good chance that you have a surface-mount lock installed on your front door. It is usually mounted above the doorknob and will have a key cylinder that can be accessed from the door’s exterior. Then, on the inside of the door, there is an additional locking…