For example if your front door lock is a schlage the other locks you want rekeyed.
New door handle same key.
You will need to get a new lock of the same manufacturer as the others and then have it.
Dump out the old pins insert the new key and use tweezers or small needle nose pliers to match the new colored pins to the color code on the special instruction sheet.
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When rekeying multiple locks to fit a single key all locks must first have been made by the same manufacturer.
Use wire to secure this knob s key to the knob.
The convenience of having a single key fit all the locks on your house including the garage can be accomplished by rekeying as long as you have the same brand of locks on all the doors.
Prop the door slightly open.
Wifi locks or keypad locks this is a high tech solution for your home to allow you to use a keypad at the lock or use your alarm system or wifi to open and close the lock.
Remove the two screws on the inside of the doorknob.
They can re key the lock to fit the old key.
Normally how they work is you open the door and insert the new key and then insert a setting pin to reset the lock and the combination pins will use the new setting.
Make a longer pin to go into the lock mechanism or steal a longer pin from a different part of the lock.
Insert the pins and reassemble the lock.
At least one of the pins has to be changed in order for the original key not to work since you cant add metal to the key you have to add metal to a pin there are two options.
Take the new lock and old key to a hardware store or locksmith.