With a key made specifically for that lock is the easiest way. Lock picking is a method of using tools--picks--to open locks, without a key, without damaging them. Locks can also be opened by drilling or by using a bump key or bolt cutters or a hydraulic jack, depending on the lock type. you could also pick it with a bobby pin and a pen cap.
Luck is to open as unprotected is to panic
There really is no way. If you put the lock on something open important, you may have to cut the lock.
Pick Lock
You can open a key lock on a door knob, or you can open a deadbolt lock on the door itself.
buy a new lock
If you do not have the combination, there is no way to open the lock. A master combination would defeat the purpose of having the lock.
The lock has a clip on the inside, pull the clip off and the lock will come out, remove the lock rod and then you can use a screwdriver to open the lock.
A key, or a Combonation
Slide the card through the slot where the lock is by the door. Set the card where the lock would be. Now open the door.
Some locks can be picked open when you don't have the key. You can use a wire hanger or a hair pin to pick a lock. If you cannot get the lock open, contact a locksmith for help.
You have to open the trunk lid, under the lock on the inside you will find a screw, remove the screw and the lock retaining clip, pull the lock out. If you can not open the trunk lid, drill the lock center out, and you should be able to open with a screw driver.
In order to open any combination lock you need to know the correct combination, set each wheel of the lock so that the correct combination of numbers are visible in a line and the lock will then pop open when triggered.