What Locks Can't a Locksmith Open?

The short answer: experienced locksmiths can open the overwhelming majority of locks they encounter — standard deadbolts, knob locks, padlocks, car door locks, and most commercial hardware. What slows or stops even the most skilled technician isn't incompetence; it's physics, engineering, and sometimes the law. High-security locks are specifically designed to defeat picking, drilling, and bypass tools. Certain specialty locks require proprietary tools or manufacturer authorization. And some locks are simply so damaged — seized by corrosion, mangled by a previous forced-entry attempt, or frozen by a broken key — that non-destructive entry isn't possible without risking further damage to the door or frame.

Knowing this upfront is genuinely useful. If you've invested in a top-tier mortise lock set for your Westbury home, that's a great security decision — but it also means that if you lose your key, the job will likely take longer and may require a replacement cylinder rather than a quick pick. That's not a problem; it's the lock working exactly as intended. Our emergency locksmith team carries common high-security cylinders and mortise lock components so we can handle most of these situations in a single visit, but it helps to know what you own.

High-security cylinders — think Medeco, Abloy, or mul-T-lock style designs with rotating or sidebar pins — are engineered specifically to resist picking and impressioning. A standard pin tumbler lock might yield to a skilled technician in under a minute; a high-security cylinder could take significantly longer, require specialized tools, or simply require drilling as a last resort. Similarly, a mortise lock set — the type commonly found in older Westbury homes, pre-war apartment buildings, and many commercial storefronts — is a more complex assembly that sits inside a pocket carved into the door edge rather than mounted through a hole in the face. Mortise locks have their own sets of levers, cams, and deadlocking mechanisms that require a technician who genuinely understands the format. Our team works with mortise lock hardware regularly, including sourcing replacement parts for older or less common configurations.

Antique mortise lock set hardware presents a particular challenge. If you own an older Colonial or Cape Cod-style home near Maple Avenue and your lock is original to the house, the internal components may be worn, broken, or simply obsolete. Antique mortise lock sets often can't be rekeyed with a standard machine — a process sometimes called how to rekey a lock without a key involves disassembling the cylinder and replacing the pin stack, which requires the cylinder to actually accept standard pin sizes. Antique locks sometimes don't. In those cases, we can often source a period-appropriate replacement, retrofit a modern cylinder into the original case, or discuss full replacement options with you before any work begins.

A door knob lock that has been drilled out previously — whether by a prior locksmith, a break-in attempt, or a DIY effort — is often in worse shape than it looks. The internal mechanism may be shredded, the door edge reinforcement compromised, or the strike plate misaligned. In these cases, a locksmith arriving for what seems like a simple lockout may find that non-destructive entry isn't the right path — controlled drilling or outright replacement is actually safer and more effective. Our technicians assess the condition of the hardware before deciding on an approach and will always explain what they find. If you've ever searched how to drill out a door knob lock, know that improper drilling can damage the door slab, the frame, and any adjacent locking hardware — it's genuinely a job for someone who does it regularly.

Deadbolts present their own considerations. Can a locksmith open a deadbolt? In most cases, yes — a quality deadbolt in good working condition can be picked or shimmed non-destructively by an experienced technician. However, a high-security deadbolt with anti-pick pins, a hardened steel insert resisting drilling, and anti-bump features may require controlled destructive entry. And if you're wondering can a locksmith install a deadbolt — absolutely, and we recommend it as an upgrade for any door currently relying only on a knob lock. Deadbolts significantly raise the difficulty of forced entry and are a straightforward addition on most residential doors in Westbury. We stock common Schlage and Kwikset deadbolt hardware and can often install same-visit.

For drivers locked out near the Westbury train station or a parking lot off Ellison Avenue, car lockout assistance is one of our most common calls — and for most passenger vehicles, it's a quick, clean job. Modern slim-jim and air-wedge tools allow trained technicians to unlock car doors without damage in the majority of cases. So if you're wondering can a locksmith unlock my car — yes, for most vehicles, this is entirely routine. The answer changes, however, with certain high-security vehicles. Some newer European makes use door locks integrated with the vehicle's electronics in ways that make traditional mechanical entry difficult or impossible without dealer-level scan tools. In those cases, retrieving a spare key or contacting the manufacturer's roadside program may be the faster path.

Key fob reprogramming is a different matter entirely. A common question we hear is: can a locksmith reprogram my key fob? For many domestic vehicles — certain GM, Ford, and Chrysler models — onboard programming sequences allow a trained technician to program a new fob without dealer equipment. For others, particularly newer vehicles with rolling-code security systems or those requiring dealer-exclusive software, reprogramming requires a manufacturer-authorized scan tool that most independent locksmiths don't carry. We're upfront about this: if your vehicle requires dealer programming, we'll tell you before we start rather than after. What we can do is cut and supply the physical key blade, so you're not paying dealer prices for something we can handle.

For most situations — the locked-out homeowner, the driver who left their keys inside, the business owner who needs a mortise lock serviced after a break-in — a trained mobile locksmith is exactly the right call. Here's a clear picture of the full range of services our Westbury team provides, so you know what to expect when you call: residential lockout service, commercial lockout service, emergency locksmith response (24/7, including holidays), mortise lock installation and repair, mortise lock cylinder replacement, deadbolt installation and upgrade, door knob lock replacement, lock rekeying (all common residential and commercial formats), master key system setup, high-security lock installation, padlock removal and replacement, mailbox lock service, sliding door lock repair, garage door lock service, window lock installation, car lockout assistance, spare key cutting (standard and laser-cut), transponder key cutting, ignition lock repair and replacement, broken key extraction (door and ignition), safe opening (dial and electronic), safe combination changes, access control installation (keypad and card reader), door hardware installation and adjustment, and strike plate reinforcement and door frame repair.

Factors that shape the final quote include the type of lock or vehicle involved, the time of day (overnight and holiday calls involve different logistics), parts required — a standard knob lock cylinder costs very different from a full mortise lock set — and the distance our technician travels within the service area. We confirm an exact price before any work begins, so there are no surprises on the invoice. If you're in the middle of a lockout right now, call (516) 400-4528 — we answer 24 hours a day, 7 days a week, and aim to reach most Westbury locations in around 20 minutes.