> How to open locks: Bumping

How to open locks: Bumping

Since about the 2000s, the so-called “bumping method” has become viral throughout the world. Its origin comes from the United States, where locksmiths used it as means of solving problems that your customers might have. But, it wasn’t until you are modified keys fell into the hands of crime that, began to commit criminal acts and a kind of stigma was created around the use of these tools.

As a result of the growing waves of crimes that have hit different countries, the manufacturers of the most prestigious brands of locks, have designed special latches to combat this security breach. This is how the first locks with anti-shock or anti-bumping technology; whose objective is to prevent thefts that use this method as a means.

It is estimated that about 90% of common locks can be forced using the bumping method. This is because almost any cylinder can be opened using this technique. If you want to learn how to open a lock using the bumping method, continue reading!

How the bumping method works

Before explaining how to open a lock using the bumping method, you need to understand how is its operation; in this way you will know that each step you carry out will be done the right way.

First of all, the key has a special composition; since the cuts pattern who owns understands the maximum depth allowed. This allows you to be able to slip into almost any lock common. These models are known as “Keys 999”
And if you want to ask them to make one for you, this will be the number that you must indicate to the locksmith.

On the other hand, you should know that the key alone unable to open a lock. To do this, you need the help of physics; specifically of the Newton’s Third Law, which states that “For every action there is an equal and opposite reaction”. Which means that, if we hit the key; the kinetic energy will be transferred through the spanner until it reaches the bolts. This action will align them momentarily, with which it will be possible to perform the lock rotation (which is what the bumping method is looking for).

All about bumping keys

As we mentioned above, bumping keys cannot open a lock by themselves; but nevertheless, 90% of locks can enter the cylinder common that we can see installed in homes. This is because these types of keys have their own profile; although it is necessary to point out that there are variations of the same profile.

On the other hand, there are locks with 4, 5, 6 and up to 7 bolts; so if you used the same key profile (999), you would need a different tooth configuration. If you go to an online store to buy a set of bumping keys, you will notice that although they are similar, they have noticeable differences. This is because bumping key manufacturers try to weigh the complications imposed by lock markings; which within the same profile and number of bolts, modify the distances.

The distance we just talked to you about is the spacing between each bolt and therefore; is in charge of determining the spacing between key teeth. This means that the same profile can have up to 10 different percussion keys.

Despite all this, it is necessary to point out that a good set of bumping keys can have up to 15 keys and still, open a large number of locks. Now, let’s know how to open a lock using the bumping technique.

How to open a lock: Bumping method

To execute this technique correctly, you will need the right tools and patience; since generally, it does not usually give results on the first try. Practice will be a great ally in the process of perfect the application of this technique; especially with inexpensive locks, which must be worked with care not to break them.

Step 0: Acquire a bumping key either by borrowing it from a neighbor, buying it online, making it yourself or having it manufactured. You should know that most professional locksmiths do not make this type of keys, unless requested by a certified locksmith; this is due to the fact that they are very suspicious of the use that will be made of the firing pin.

Step 1: Insert the bumping key into the keyhole, all the way. Traditional locks are designed with a round segment that is unlocked when all the bolts are aligned and turned at the same time. As you enter the key, you will hear small clicks. These are the bolts lifting up as the teeth of the wrench rake them.

Step 2: Now, you must have a lot of agility and speed; since you only have a fraction of a second to execute the next step correctly. Take a sturdy, blunt object (preferably a rubber mallet), and land a light blow to the head of the wrench. Immediately after the hit, you will need to turn the key.

As we explain in the section on how does it work, the blow will transfer its force to the lower and upper section where the bolts are located; which allow the locks to move. On the other hand, you must manage the amount of force you exert on the blows; the best option is to start with a low intensity and gradually increase the measure.

Step 3: If you were quick enough to turn the key, you will have opened the lock without a hitch. Speed ​​is important because the turn must be done while the bolts are jumping inside the lock; as they will then return to their normal state and the cylinder will lock again.

This technique is especially useful for times when we have lost our keys, forgotten inside the house or, to enter that family property that no one has visited for years. The action of making the bolts jump will considerably facilitate the opening process and allow you to enter the room without problems.


The objective of this article is to provide a simple, fast and comfortable alternative; to people who need to open a lock, in order to solve a problem.

Use the bumping method only on locks that you own or with the explicit authorization of their owners. Take into consideration that carrying or using this tool in public spaces may be frowned upon by other people or by the authorities. Remember that trespassing, damage to private property, invasion of private property, theft, theft and misappropriation; they are criminal offenses.

How To Learn To Rapidly Open Locks With A Bump Key! (How Lock Bumping Works)

How To Learn To Rapidly Open Locks With A Bump Key! (How Lock Bumping Works)

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