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Obviously, this should motivate any homeowner to think seriously about taking measures to avoid lock bumping. Bump keys are specially designed with a specific cutting technique that can sidestep the security mechanism in the average tumbler and pin lock. You see, the pin stacks in a pin and tumbler lock are spring loaded to keep the cylinder in place so that it can only be turned with the right key. Most pin and tumbler locks come with a dual pin set, including key pins and driver pins.
On the other hand, a bumper is intentionally designed to bump against the pins into misalignment, especially when a hammer or a screwdriver is used to facilitate the process. The longer you strike the bump key, the more likely it is to create a temporary shear line on the key which then allows the door to open.
The worst part about robberies that are committed using bump locks is that they can remain undetected for long periods of time. Anyone can legally make and possess a bump key. If your lock has been picked, there will be minor scratch marks. These are finer than those made by keys. The exposed, shiny metal is a flashing sign that someone in your neighborhood was up to no good. Damaged locks are locks that have been tampered with. This comes from the blunt force robbers use. Like if they try to fly-kick their way in or with bumping and snapping techniques.
The lock might not be non-functioning. Hacks can happen when passwords are in plain text. Without these protocols, passwords are visible in the system. Trying to get access to your device is one way of tampering with your smart lock.
Security Magazine says to watch for odd emails, text messages, phone calls, and links to suspicious-looking websites. For example, emails that appear to be from your bank warning that you have been hacked or calls supposedly from the IRS threatening you with unpaid taxes are common spoof scams. Locks are among the most important investments you will ever make in your home.
Advanced lock systems and security systems can make all the difference. This is why you take the threat of bump key use and your locks even more seriously. Big investments can be scary ones.
However, investments in something as important as home security is too big to settle for anything less than the best.
So how can you be percent sure you made a good buy? This is a simple checklist. You can tick off a few boxes before purchasing to ensure you are in a good position before you buy. Establish solid goals for your home security before making a purchase.
This is your investment, and only you can spearhead a great outcome. Once you establish these goals, do your homework. Know what the return policy is from your vendor. You may end up disliking the product for personal reasons.
Hubert Miles is compensated for referring traffic and business to these companies. I've been conducting home inspections for 17 years. I started HomeInspectionInsider. Many building projects call for the application of a fresh coat of mortar to an older surface. Mortar can bond with most surface types, but what if that surface is concrete? Will mortar Even though you might not be thinking about your water heater from time to time, it plays a very critical role in the plumbing of your home. Typically, most people set their water heater Skip to content Locksmiths sometimes use bump keys to open doors when their proper keys are missing.
Quick Article Navigation Show. How A Typical Lock Works. Bump Key Proof Your House. Bump-proof Basics. Refer To Smart Lock Tests. Perks of Smart Lock Investment. Smart Lock Installations Are Expensive. Picking Signs. Lock Is Not Working Right. Watch For Signs of Device Spoofing. Locks Are An Investment. Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Part 1. Start with an ordinary key. Locks and keys come in all different makes, but many keys will fit into a standard cylindrical home lock.
Try it out in a few cylinder locks to see if it fits before filing it to the right specifications. Lock bumping is such a potential problem because it can be performed with almost any key. Identify the position of the valleys in the teeth. Look at the key and observe the spacing of the teeth. In order to be able to disengage the pins of the lock, these valleys will need to be filed down all the way to the main shaft of the key.
When it comes time to modify the key, be careful not to file the valleys too shallow or deep. If the spaces between the teeth are not at the right depth, the key will be useless. File the valleys down to their lowest position. Use a manual file a wedge or triangular shape will work best to shave down the valleys between each tooth on the key.
Once the valleys are as deep as they can be, the teeth will be long enough to push up the pins in the lock when the key is struck a certain way. Make sure the teeth are level. File each valley down to the same point along the shaft of the key. If the valleys in the back are deeper, you may have difficulty pulling the key out of the lock after bumping it. There should be a very small triangular depression in the shaft of the key at the bottom of each valley.
Part 2. Insert the key into the lock. Fit the key into the lock. Push it in until it stops, then pull back slightly until you hear or feel the last pin click.
This puts the pins in the right position to be manipulated by the teeth of the modified key. Keys of roughly the same size will often fit any lock with the same mechanism like a cylindrical lock. The deeper valleys might make it prone to getting caught on the pins.
Begin turning the key. Try turning the key in the unlock direction usually counterclockwise. Keep constant pressure on the key as you work. Grip the key near the teeth to allow yourself room to hit the back end of it. It will be weaker since you removed metal from the body, and twisting it forcefully while striking it might cause it to break off in the lock.
Strike the back of the key with a blunt object. Using a mallet, the handle of a screwdriver or another broad, blunt object, strike the rear edge of the key as you continue trying to turn it in the lock. Pull back on the key until you hear the first click before attempting the strike. Repeat until the key turns in the lock.
Repeat this process, turning the key in the unlock direction the entire time, until the pins catch. Part 3. Check for signs that your locks are tamper-proof. Most modern locks are designed to protect against lock-picking techniques like bumping.
Take a look at the face of your deadbolt to see if a small marking is displayed above or to the side of the key slot. If so, it means your lock is resistant to forced entry measures. Ask a hardware specialist for tamper-proof designs when buying new locks.
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