Patent ID: 8474289

Claim:
A locking system, comprising: a cylindrical barrel lock having a first end with an aperture, the cylindrical barrel lock having an inner shaft; at least one locking ball aperture configured to accept at least one respective locking ball, the at least one locking ball aperture extending through the inner shaft and positioned along a surface of the cylindrical barrel lock, the at least one locking ball configured to extend through the at least one locking ball aperture; a locking mechanism configured to cause the at least one respective locking ball to be positioned in a locked position and an unlocked position, the locking mechanism rigidly coupled to a threaded aperture; and an inner sleeve positioned within the inner shaft, the inner sleeve configured to accept a target key in the inner shaft via the aperture, wherein a first end of the inner sleeve is positioned adjacent to the aperture; a bait device positioned adjacent to a second end of the inner sleeve, the bait device comprising a bait plunger configured to be engaged by a gripping mechanism of the target key, wherein the bait device comprises at least one of a ferromagnetic and a paramagnetic material, wherein the inner sleeve is configured with a first circumference allowing insertion of the target through the inner sleeve to engage the bait device, the first circumference being less than a circumference of the gripping mechanism upon engagement of the gripping mechanism with the bait plunger, the bait device further being positioned between the threaded aperture and the aperture on the first end of the cylindrical barrel lock; wherein the threaded aperture is configured to engage an adapter pin inserted through the inner sleeve, the adapter pin having a first end that is compatible with the threaded aperture and a second end configured to engage another key exterior to the inner sleeve and adjacent to the first end of the inner sleeve.