Lock Bumping Threatens Security
Lock bumping is a method to open a lock using a specially cut key, known as a bump key, that matches the lock’s brand. To bump a lock, you insert the bump key into the keyhole, pull it out slightly, and then tap the key sharply with a tool while applying gentle turning pressure. This action causes the lock pins to jump and align at the shear line, allowing the lock cylinder to turn and unlock. Bump keys can be purchased online for just a few dollars and is taught in YouTube videos.
With $5 and an Internet Connection, Anyone Into Most Homes and Businesses
How Lock Bumping Works
What are Bump Keys?
Bump keys are keys that have been cut in a very special way. The cuts go to the deepest depth possible. This creates a large ridge between the depth cuts. You have a ridge, then a valley, then a ridge, then a valley….
How Is Lock Bumping Performed?
The only requirement of lock bumping is that you have a bump key that is the same keyway as your lock so that the bump key slides into the keyhole. That is, if you are bumping a Kwikset lock, you have a Kwikset bump key; a Schlage lock, you have a Schlage bump key, etc…
To bump a lock you insert a bump key into the keyhole.
You then pull the key out just a bit, about 1/8 of an inch. This puts the ridges right in front of the lock cylinder pins.
You then tap the key (bump it) with a small hammer, the handle of a screwdriver, or a rubber bump tool. Anything that will get the key to go into the lock very quickly. While doing this you use your thumb and index finger to gently put turning pressure on the key while you are tapping it.
This works because when hit the ridges force all of the pins up to the shear line within the lock cylinder. The slight turning pressure on the key holds the pins in place at the shearline, and the cylinder is then free to spin.
Video Demonstration of Lock Bumping.
Lock Bumping Demonstration
Lock bumping can be used to bypass your home or business locks.Lock Bumping Facts
- 90+% of American doors use old-style cylinder locks which are vulnerable to lock bumping
- Your door lock can be lock bumped by a child
- When a bump key is used there is no sign of forced entry or damage.
- Lock bumping can be stopped by a variety of measures.
How to Bump-Proof Your Locks
Install a Half Deadbolt
The absolute best home deadbolt lock to secure your home against lock bumping is to install an inexpensive secondary half deadbolt. Half deadbolts are pick-proof, bump-proof deadbolt locks. You get a ton of extra security benefits when installing an additional 1/2 deadbolt.
The drawback of this solution is that the doors it is installed on cannot be primary entry or exit doors.
Install Kwikset Smart Key Locks
Are your locks already bump-protected? Check your deadbolts for the markings in the photo. If you have them, you already have bump-resistant locks & pick-resistant locks made by either Kwikset or Schlage (depending on the marking).
Kwikset locks may have other security disadvantages, but they will stop lock bumping. Get them on Amazon here
Install High-Security Locks
Install high-security bump proof and pick resistant locks.
We recommend the Mul-t-lock brand for its strength, resistance to attack, and additional security features not available in other high-security locks. You can buy them on Amazon here.
High-security lock products are bump proof. However, they are not pick-proof locks as some can be picked using special tools. But those that know how to use those tools and pick the locks are highly skilled and trained professionals so they are extremely secure locks in this regard.
Although you can buy Mul-t-lock online, the keys you get are high-security, restricted keys. Your local locksmith may not have access to the blank you purchase online so future key copies might be difficult to find. For this reason, we recommend using your local locksmith so you’ll be able to get key copies when needed.
VIDEO TRANSCRIPT
I’m the owner of ACME Locksmith in Mesa Arizona. Today we’re going to talk about lock bumping, what it is and how people can get into your home using this technique. We’re also going to highlight several products to protect your home so that somebody can not use a bump key to get into it.
Lock bumping is a technique that locksmith used to unlock houses for many years, but unfortunately when the internet came into being somebody put the information out there online for anyone to see, Nowadays anyone with three dollars an internet connection could actually get the necessary and the training necessary to use this technique to bypass your home’s locks.
Let me demonstrate now. Here’s my key that’s actually designed to work this lock. Now this is my bump key. This is a key that anyone can buy online for about three dollars. Now the thing about a bump key is it won’t actually turn the lock until you give it a good hard smack. Now let me try to position myself so you can see me do this…and there it goes the lock opened.
I haven’t shown you anything that anybody can’t find online already but it would be very irresponsible me if I didn’t show you how to protect yourselves against this type of technique. So let’s talk about products available on the market to protect your home from lock bumping.
I’m going to go in order of least expensive to most expensive. Now a new product that we really like is actually just a simple strap [NOTE: THIS PRODUCT HAS BEEN REPLACED BY AN EVEN BETTER ONE Our Top Home Security Tip!] that secures on the back of your deadbolt and your doorknob and what it does is, it will actually lock this deadbolt in place so that even if you have a working key nobody can turn and open the lock.
We really like this product because it costs less than twelve dollars and you can implement it anytime you’re inside your home. Here in Arizona we go in and out of our houses through the garage. So you can leave this product installed on your front and back door so that nobody can bump those locks while you’re out of the home.
Here we are with the key that’s actually designed to work this lock. Now remember this is the easiest way to open any lock and this strap will actually stop not only lock bumping but stop a working key from opening the lock.
Now I’m going to install my strap, and I’ll show you how this is done in just a minute. It’s stops the thumb turn from turning so that nobody can get into the home. Now that my strap is on, it takes about ten seconds to put on. It’s very very quick now take a look at this. This key is no longer turning this deadbolt.
I’m going to ply a little force here. I didn’t want to snap it all the way off but I wanted to show you that this key would break before that strap gives way to anybody can open your door. It’s a great product we love it’s brand new to the marketplace. This is not a trick. This is a working key for this lock and, there you go, I’m going to show you how strong this is you’ll snap the key off before the lock opens.
The thing we love about this product is it’s less than twelve dollars and it will secure your home to the extent that we’ve just demonstrated. We actually sell this product online (NOW THIS PRODUCT ONLINE) at Acme locksmith
Now let me talk to you about a Kwikset product. Kwikset products aren’t very heavy-duty, but to stop lock bumping they’re one of the best residential products on the market right now. Let me show you this product it’s called the Smartkey by Kwikset. You can get prices for Kwikset Smartkey locks on Amazon here and all the major box warehouses.
It’s different in that it uses wafers instead of pins, and lock bumping actually counts on the fact that you’re using pins to create a shear line. This is actually a waiver system. You can identify a smart key product because it has an additional hole right on the side of the cylinder. So if the locks on your house today have that little hole next to the keyhole you have a bump resistant product on your home.
If you have regular Kwikset on your home simply replace the dead bolts that you have on your house with the Smartkey product. That deadbolt will be your bump resistant protection.
Another product we really love is a half deadbolt. If you have another brand of Hardware on your house and you don’t want to replace all your hardware with the quick-set brand, because that’s very expensive to do, you can install half deadbolts on your doors, and a half deadbolt is just that.
On the inside of the home there’s a thumb turn just like you’re used to always seeing, but on the outside of your home there’s nothing to indicate that there’s even a lock there so there’s no hole. No hole to put a screwdriver in. If an intruder was actually able to bypass your other locks the door still wouldn’t open, and they’d be sitting there baffled as to why.
The half deadbolt needs to be professionally installed because of the door prep.
The last thing I want to show you is a high-security product. They’re bump proof, they’re pic proof. They have the highest lock rating. It’s the most secure thing you can put on your home.
High-security products take special keys and key ways. This is the reason why this lock is bump and pick proof. You can see this is not your standard house key. You would actually have to go to a lock professional to get this key copied.
So if you do hand out keys to to your babysitter or your dog walker when they give that key back to you you know that they haven’t made a copy of it and your home stays secure. The reason we like the Mul-t-lock brand over the other brands of high security locks is because it has this very unique ball bearing feature on the actual deadbolt itself that will actually lock it into the receiver.
That secures to your door frame so that you cannot separate these two objects from each other without considerable force. You can find Mul-t-lock product on Amazon. You will likely need a local locksmith certified in Mul-t-lock to do the installation of the product.
So hopefully you’ve learned a little bit about lock bumping what it is how to protect your home. From the inexpensive less than twelve dollars strap that can comfortably secure you in your home to upgrading some of your locks to the Smartkey feature.
Or if you don’t have the quick-set brand, going into a half deadbolt type of situation so there’s nothing on the outside of your door an intruder can attack. To your higher and high security which is the most effective but expensive way to protect your home.
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