They are generally accepted as being more secure than the standard spring lock because they cannot be opened unless a key is used to rotate the lock cylinder to the open position.
How to identify manufacture of your door lock.
Cheap low quality and mass produced locks often do not come with key codes.
From the different types of locks deadbolts are the ones most commonly used for front doors.
Knockoffs are blank faced like this one.
Is the lock on the chiselled into the door.
Your key code is typically stamped on the face of the lock or key but some manufacturers print them on a key code card with the printed cutting number.
In that case you ll have to replace your entire lock system if you do not have a corresponding key.
If you re having trouble identifying your door lock type follow these simple steps.
Check for a manufactures stamp on the lock face plate.