Lock Bumping

by April 21, 2009 04/21/09

lockbumping01Lock Bumping is quickly becoming a popular way of bypassing a lock without the need for picking. The method uses a key blank from the particular lock you’re wanting to gain entry to. The key blank is then filed with a square file to let the key pins drop to their furthest position on the lock.

The filed blank is inserted into the lock, and then tapped with a special lock bumping hammer at the same time the key is being turned. The tapping from the bump hammer jostles the pins and allows you to turn the lock as the pins line up with the shear line. This is a hard concept to explain with words, so we’ve linked to the following video to provide some  clarification.

According to LockBumping.org bumping locks originated in the 1970′s in Denmark.  The use of a bump key was not introduced until some time later and was first recognized as a potential home security or lock security issue around 2002-2003 in Europe.  LockBumping.org is a great resource for  continuing  your lock bumping education.

You can use anything from a hammer to a screwdriver handle to bump a lock, but there are also specialized lock bumping hammers available like the one used in the video above. Here’s one that’s available from 215Gear, but unfortunately it doesn’t have a picture.

We’ll be continuing with more about Lock Bumping along with more Lock Picking in future articles!

These lock picking tips and techniques provided in this article are only to be used in accordance with all local, state, and federal laws and provided for lock sport (recreational lock picking) use only. Lock sport should be used to learn about the illusion of security, and how to properly protect yourself and your possessions. Don’t do anything illegal.


Are you getting more than 14¢ of value per day from ITS Tactical?

Please consider joining our Crew Leader Membership and our growing community of supporters.

At ITS Tactical we’re working hard every day to provide different methods, ideas and knowledge that could one day save your life. Instead of simply asking for your support with donations, we’ve developed a membership to allow our readers to support what we do and allow us to give you back something in return.

For less than 14¢ a day you can help contribute directly to our content, and join our growing community of supporters who have directly influenced what we’ve been able to accomplish and where we’re headed.

Click here to learn about all the benefits and Join!


Raven
Raven

Video is kaput.

michael
michael

Can a DIYer "fix" an existing lock to make it bump resistant or proof? perhaps an adjustment to the mechanism or tumbler?

Brian
Brian

Thanks! Valuable info for any operator. Looking forward to trying it out. The rake and throw lever can be tedious. A skill that opens alot of doors for you literally. I hope this doesn't fall into too many wrong hands. The flip side is that I want to change my locks now.

Morgan Atwood
Morgan Atwood

Interestingly, in the book High Security Mechanical Locks: An Encyclopedic Reference, by Graham Pulford, there is a copy of a US Patent application illustration from 1928, for what is called a "rapping key". It is the same idea as a bump key.

The idea has been around for awhile - It just took that while to filter from idea to application.

Morgan Atwood
Morgan Atwood

Interestingly, in the book High Security Mechanical Locks: An Encyclopedic Reference, by Graham Pulford, there is a copy of a US Patent application illustration from 1928, for what is called a "rapping key". It is the same idea as a bump key. The idea has been around for awhile - It just took that while to filter from idea to application.

ITS Admin
ITS Admin

Brian,

You're most welcome for the information. Our goal in showing what's out there is to make everyone aware and hopefully proactive in protecting themselves. Let us know if you need some advice on bump-proof locks.

Thanks for the comment,

Bryan

ITS Admin
ITS Admin

Brian, You're most welcome for the information. Our goal in showing what's out there is to make everyone aware and hopefully proactive in protecting themselves. Let us know if you need some advice on bump-proof locks. Thanks for the comment, Bryan

ITS Admin
ITS Admin

Morgan, thanks for the information! It's very interesting that the concept has been around that long.

The Latest
Squawk Box

If you’re looking for a great lock picking toolset that’s perfect for any skill level, be sure to check out our Bogota Titanium Flats 4-Piece. This toolset includes three straight picks and one tension wrench. Together the Titanium set weighs just 0.3 ounces and their inherently “flat” shape make them easy to store.

1 day ago
Leave a Comment