When you find your door unlocked and you’re certain you didn’t forget, it can leave you unsettled. We’ve met many homeowners in Calgary who felt something wasn’t right with their locks but couldn’t explain why. It’s important to recognize the early signs that someone may have tampered with your lock.
We often get asked how to tell if a lock has been bumped or picked. Therefore, we’ve created this guide to walk through the most common signs, what each one could mean, and what steps you should take next.
What Is Lock Bumping and How Does It Work?
Lock bumping is a technique that criminals use to unlock doors without using force. To clarify, it involves a specially cut key known as a bump key. When the bump key is inserted into the lock and tapped with an object, it temporarily aligns the pins inside, allowing the lock to turn.
It takes only a few seconds, and unfortunately, it doesn’t leave behind obvious damage. That is to say, you may not notice it unless you know exactly what to look for. We’ve responded to several break-ins where bumping was the method used, and the homeowners had no idea it had even occurred.
Picking a Lock Is Different But Just as Subtle
Lock picking is another technique that relies on manipulating the internal pins of the lock. However, it requires slightly more time and skill. Tools like tension wrenches and hook picks are used to apply pressure and lift pins until the lock turns.
Because lock picking doesn’t require a key, it can be done with little to no trace. That being said, small scratch marks or strange wear around the keyhole often point to picking. We’ve noticed that these subtle signs are easily overlooked, especially when locks are older or already show general wear.
Signs That Your Lock Might Have Been Bumped
One of the most common indicators of bumping is fine metal dust around the keyhole. This happens because bumping applies sudden pressure to the lock pins. In addition, you might see tiny dents on the lock face from the bumping tool.
You may also notice that your lock suddenly feels looser or doesn’t turn as smoothly as before. We’ve come across locks that develop minor internal damage after being bumped, and over time, this makes them easier to manipulate again.
If anything about the lock seems off to you, such as a key suddenly fitting better or worse, don’t ignore it. You can always reach out to a residential locksmith in Calgary to take a closer look.
Signs That Suggest Lock Picking
While bumping tends to be more aggressive, picking can be sneakier. Look closely at the keyway and cylinder. For example, scratches near the edge of the keyhole or around the faceplate could be signs that someone used a pick.
You might also find that the key doesn’t insert as smoothly as it used to. Similarly, the lock may start to resist turning slightly, even with the correct key. We’ve found that internal wear from picking tools can cause these small shifts in performance.
Another overlooked detail is the lock’s positioning. If your deadbolt or latch doesn’t line up the way it used to, someone may have forced movement without your knowledge. These misalignments can indicate tampering, and we often find them during on-site inspections.
Why It’s So Hard to Detect Tampering Right Away
Both bumping and picking leave behind very little obvious evidence. Therefore, many homeowners assume the lock is just aging or behaving strangely. We’ve heard people blame humidity or loose screws, only to discover clear signs of tampering upon closer examination.
In addition, modern locks are designed to be low-resistance, which ironically makes them easier to manipulate. That’s why we always advise clients to consider locks with bump-resistant or pick-resistant features.
Sometimes, even if you notice something unusual, it may take a trained eye to confirm tampering. That’s where a professional locksmith in Calgary can provide clarity and peace of mind.
What to Do If You Suspect Your Lock Was Bumped or Picked
The first thing you should do is avoid using the lock until it can be checked. This ensures you don’t disturb any subtle clues or cause further wear. Secondly, check your home for anything out of place, missing, or disturbed.
Take note of whether anyone else has a key or if a spare might be unaccounted for. This is especially important in apartment units or rentals. We’ve had clients assume they were simply forgetful, only to discover unauthorized access had occurred.
If you’ve noticed something unusual with your locks or just want peace of mind, don’t wait until it’s too late. We’re here to help you check for signs of tampering, rekey your locks, or upgrade your home’s security. To schedule an inspection or get professional advice, Contact Us today.
Tips to Strengthen Your Locks and Prevent Future Tampering
Not all locks are created equal. In fact, many homes still use standard pin-tumbler locks, which are the most vulnerable to bumping and picking. Therefore, we suggest replacing them with high-security locks that use patented keys and anti-pick features.
For example, some locks have unique keyways that make bumping tools ineffective. Others use sidebars or disc detainers, which completely change how the internal mechanism works. Similarly, adding reinforcement hardware, such as security strike plates and longer screws, makes forced entry much harder.
Don’t forget that visual deterrents also matter. A sturdy lock with an unusual keyhole suggests more resistance, which can make someone move on to an easier target. We’ve seen that simple upgrades often prevent repeat attempts, especially in areas with known break-in activity.
Why Homeowners Overlook These Warning Signs
It’s common to miss the early signs of lock tampering, especially when the entry wasn’t forceful. We’ve found that people often chalk it up to their own error, like forgetting to lock the door or misplacing a spare key.
Moreover, many modern crimes are opportunistic. Someone may bump a lock just to test access without actually entering. Consequently, the door might be left as it was, creating the illusion that nothing happened. That’s why it’s important to listen to your gut. If something feels off, investigate.
Another reason people overlook these signs is because they believe they live in a safe neighborhood. While community safety is valuable, it doesn’t guarantee protection against these quiet methods of entry. We always recommend at least an annual checkup of your locks to ensure everything is still in good shape.
When You Should Call a Locksmith
If you notice even one of the warning signs mentioned above, it’s worth calling in a professional. Even if nothing was stolen or damaged, a quick inspection can help you understand the situation clearly.
We’ve visited many homes where no one realized there was a pattern to their lock’s behaviour until we pointed it out. Sometimes, it’s as small as a worn cylinder or a loose screw—but in other cases, it’s a sign someone tested access.
A residential locksmith in Calgary can rekey, replace, or upgrade your locks in ways that offer stronger protection without needing major renovations. It’s a small step that brings much-needed peace of mind.
How We Approach These Situations
At Lock & Locks Locksmith Calgary, we always begin with a careful examination. We look for tool marks, check pin alignment, and test for abnormal lock movement. Our team documents everything and provides recommendations based on what we find.
If there’s reason to believe tampering occurred, we let homeowners decide if they want a police report filed. Most importantly, we help them secure the property immediately. Whether it’s replacing a cylinder, adding extra hardware, or upgrading to a high-security lock, the goal is to act fast and prevent future attempts.
We also make sure our clients know how to identify these issues in the future. After that, we usually recommend lock audits every 12 to 18 months, especially for those who have had prior incidents or live in high-traffic areas.
Frequently Asked Questions
How can I tell if someone tried to pick my lock?
Look for small scratches near the keyhole, changes in how your key fits, or resistance when turning the lock. Picking often leaves behind subtle marks that aren’t noticeable unless you’re looking closely.
Is lock bumping still a common break-in method?
Yes, it’s still used in both residential and commercial settings. It requires little skill and no visible force, which makes it attractive to opportunists. That’s why bump-resistant locks are a wise investment.
Will my lock still work after being bumped or picked?
Sometimes it will, but it may develop internal wear. Even if it seems to function, that doesn’t mean it’s secure. Have a locksmith inspect it to avoid ongoing vulnerabilities.
Do all locks show signs of tampering?
No, high-quality tools and skilled intruders can leave almost no evidence. However, most standard locks do show at least minor indicators, especially around the cylinder and keyway.
What should I do if I suspect someone has a key to my home?
Rekey the locks as soon as possible. This is quicker and more affordable than full replacement and ensures any unauthorized copies no longer work. A residential locksmith can do this in a single visit.