Yes that little hole is for unlocking the knob.
Unlock door with twist lock.
How to unlock interior door twist lock.
The second type of lock uses a twist button that is turned right or left to work.
These locks engage with a simple twist of a knob located on the interior door knob or handle.
To unlock a door with a keyhole you can pick the lock with 2 bobby pins.
Bend the paper clip so that a portion of it is long and straight enough to insert into a small hole on the door knob.
You may need to turn the screwdriver in order for the door to unlock.
One is just a thick pin the other actually has a flatten end to twist in.
Older doors may still come equipped with a third type of privacy lock.
This lock type is typically engaged by pushing the door knob in towards the door and turning it slightly in one direction.
The first type uses a push in button in the knob to lock the door from the inside.
They re used on front doors patio doors garage doors that go into your home or other exterior doors.
Other keyed entry door knobs have a twist mechanism on one side that you turn to lock or unlock the door.
Find a paper clip.
Locate the hole on the door knob.
First you ll need to determine what type of lock is installed on the bedroom door.
There are iirc two different keys depending on the kind of lock it is.
Bend the closed end of one of the bobby pins to form a 90 degree angle.
Generally speaking there are two types of locks that are used for bedroom doors or interior doors.
If the locking mechanism is a latchbolt the kind of bolt that is spring loaded and has one angled edge and the angled edge is facing away from you you can hook it with a wire hanger.
The button unlocks when you turn the interior knob.
Just insert the screwdriver into the small hole and press the button on the inside of the handle with it to unlock the door.