Lock snapping is on the rise and is a quick way to snap a particular type of lock. Unfortunately, the lock in question is the euro cylinder lock that is in use on the majority of households.
Cylinder snapping, lock pulling or lock snapping usually involved damage to the handle to expose the cylinder then the application of force to break the lock at its weakest point. Unfortunately some improperly installed lock expose the cylinder-it should be mounted as close to flush as possible. This weak point is where the lock is mounted into the door and ‘snaps’ out the lock. Once snapped entry is straightforward and you are left to deal with the results of unauthorised entry.
The following diagram is a representation of a euro cylinder lock to demonstrate the weak point:
Fortunately, manufacturers have responded to this and produced replacement cylinders that have a sacrificial component. What this means is that the front of the lock snaps off but the locking element is still intact and securing the door. Clearly a replacement lock would be required if this happened but you are safe from this quick and easy form of entry.
The following diagram represents the sacrificial front element:
Be aware not all antisnap locks are created equal, the below video demonstrates how an antisnap lock can be snapped. Clearly what is demonstrated is that grabbing past the sacrificial edge will allow the mounting hole to again be the weak point. 3 star locks will snap but maintain a core that will not allow the lock to be opened.
Antisnap lock snapped: