By a1alocksmit61198753, Feb 15 2017 05:01PM
Also known as the Yale lock or pin tumbler lock. This lock functions using pins of different lengths to prevent the lock from opening. These are found in cylinder locks, where the cylinders can be removed from the framework of whatever they are securing. Here is the vulnerability: the lock cylinder can be removed entirely.
These locks work with obstructions or wards that prevent opening. However, these locks have several vulnerabilities making their use generally for low security purposes. A well-made skeleton key can get around most of these wards. There is a limited number of unique possible keys, so keys meant for other doors can open others as well.
A lever lock uses a set of levers that prevent a bolt from moving. A key will be entered, turned, and in turn lift the levers to a height that allows the bolt to pass through.
Chubb Detector Lock
This lock is a variation on the lever tumbler lock. If someone attempts to open it using the wrong key or pick the lock, it self-jams in a locked state, notifying the owner that it had been tampered with. The self-jam occurs by any of the levers being lifted higher than necessary for the bolt to be removed. Originally it required a special resetting key, but later advancements removed this need.