Jamming the wrong key into a lock or.
Change door lock without key.
Alternatively you can buy a re keying kit for the lock you already have.
But this is not possible when there is a keyless door lock installed on your door.
To change the lock on a regular door knob first use a screwdriver to remove the door knob and the old latch.
Before you learn how to change door locks measure the space where you ll install the replacement.
How to re key a door lock change your locks yourself by removing the lock cylinder and changing the pins.
Take care to measure carefully as matching the size can be especially problematic in older homes.
30 things to remember when on the hunt for a new home 3.
You ll probably have to replace the lock with a cracked or warped locking mechanism soon anyway so consider doing so first.
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Insert the pin straight through the lock cylinder to reach the lock s release mechanism.
Examine the handle and trim on the interior side of the door.
The key pins correspond to specific groove cuts on a key and these are the main elements that are targeted in the attempt to unlock a door without a key via lock picking.
Once you have the kit remove the lock cylinder from the door knob so you can change the pins inside.
Insert a straightened paper clip into this hole and apply pressure to release the interior handle.
First replace the lock.
Next put a new latch in and replace the door knob.
Rekeying won t fix a worn or damaged lock.
Like all mechanisms with moving parts a lock eventually wears out.
For added security you can even try installing a double sided fingerprint door lock that might require a code to be opened from the inside and the outside.
There may be a small pinhole holding the handle in place.