Thu Sep 04, 2014 1:12 am
Targus DEFCON MKL (master key lock)
Picked this up at a thrift store for pennies.
Thought it was your average tubular until I saw the pins.
Turns out it's a fairly economical master key pack from Targus. Instead of splitting up the pins internally they've cut a step into the top pins. Presumably I have the user key which is cut normally to interface with the pins' centers. The master key would have small grooves so as to only interface with the outer radius.
A potential advantage is that there is only one potential sheer line, so picking it (completely blind) would be the same as a non-mastered lock of similar quality. I say potential because just looking at the stepped pins tells you their upper limit. Additionally, to accommodate the key space and master, non-stepped pins will tend to have a deeper set.
So that's without a key. A glance at the lock with a key tells you the master bitting. All it would take to turn a user key into a master is two slivers of 0.0092 aluminum flashing (or equivalent) and a dremel.
Thought it was your average tubular until I saw the pins.
Turns out it's a fairly economical master key pack from Targus. Instead of splitting up the pins internally they've cut a step into the top pins. Presumably I have the user key which is cut normally to interface with the pins' centers. The master key would have small grooves so as to only interface with the outer radius.
A potential advantage is that there is only one potential sheer line, so picking it (completely blind) would be the same as a non-mastered lock of similar quality. I say potential because just looking at the stepped pins tells you their upper limit. Additionally, to accommodate the key space and master, non-stepped pins will tend to have a deeper set.
So that's without a key. A glance at the lock with a key tells you the master bitting. All it would take to turn a user key into a master is two slivers of 0.0092 aluminum flashing (or equivalent) and a dremel.
