Professional locksmiths often face the problem that a door has been locked and it is no longer possible to open it non destructively.
Open a lock on a door non destructively.
When you insert the screwdriver in the hole where the lock is jiggle the screwdriver around until you hear the lock unlocking.
Open a locked door with multipick opening entry tools.
Slide out the spindle that goes through the door then loosen the screws that hold the lock onto the edge of the door.
Light torque is applied to the plug or cam with one hand the other hand uses a rubber mallet to gently hit the bottom of the cylinder.
Any decent locksmith should at least try non destructive efforts first before resorting to drilling.
If the lock is paired with a reinforced strike plate this method will not work because the strike plate will essentially be barring access to the slanted latch.
If you can see the door hinges you can open the door.
In such a case it is necessary to damage the cylinder in order to open the door.
The door lock must have an angled latch bolt that can be pried open in order for this method to work.
The entire lock assembly can then be slid out.
Paperclips are a great tool when you need to unlock your bedroom door lock.
You simply need a straight stiff.
Rapping is a non destructive method of opening a pin tumbler cylinder without affecting internal components.
Look at the door hinges.
To rap a lock.
Squirt the powder into the lock the graphite will make the lock easier to open.
Poke the open tip into the lock.
Most american locks are easy to disassembly in this way but many european profile locks do not have exposed pin chamber screws or casings.
Rapping is similar in function to key bumping but without the forensic implications.
Inside is a small button that needs to be pushed to unlock the door.