Locksmith services are always 10% OFF for ALL SENIORS.
Locksmith services are always 10% OFF for ALL SENIORS.
Think about your current security…is there something missing? While we often think about the cost of a high security lock, we don’t think about the cost that will occur if there is no high security lock.
It makes most people think that now is the time to upgrade to a high security lock.
Way high security locks:
The good news is that GTA Lockman – Mobile Locksmith Service is here to make this happen and to install these locks or even repair those locks that you already have in a professional and discreet manor.
Our goal is your protection in your home, business and vehicle.
High security locks are just one step that you can take to make yourself feel safer at your home or business.
We have locks and products that are meant to enhance your security at home or at your business location.
These high security locks deter unauthorized entry by ensuring that there is no way to lock pick the lock, key bump, perform a destructive entry or even use a lock bypass technique.
At GTA Lockman – Mobile Locksmith Toronto we carry tons of high security locks from the best manufacturers out there to ensure that you are always protected.
Our experts can give you direction on which type of lock is going to fit your needs.
GTA LockMan offers high security locks and keys services to residential and commercial clients in Toronto and GTA.
We offer Mul T Lock products that give families peace-of-mind combined with convenience and flexibility.
Medeco High security door locks utilize solid materials, cylinders, and complex keyways for extra strength and design features that prevent unauthorized entry.
These locks and cylinders are virtually pick proof and bump proof.
MUL-T-LOCK
Mul-T-Lock Interactive+ high security mortise cylinder
MUL-T-LOCK
Mul-T-Lock Hercular high security Deadbolt
MEDECO
Medeco Maxum deadbolt lock
MEDECO
Medeco mortise cylinder
When you go with us, you can feel great about the recommendation that we make you.
After all, we are not going to recommend something that we ourselves would not use in our own homes or businesses.
You will find that with high security locks, the equipment that is used is high grade as well, which can include heavy duty steel bolts, solid keys and much more.
All of this is meant to give you even more security
Why should you call us? That is simple
Experience
Availability
Options
We have the experience to make this venture effortless for you, and we are available on weekends, holidays, day or night to help with your security needs.
With the numerous options that we have, we will make sure that your home or business is secure.
A standard residential or commercial lock provides a basic level of security, but it can often be defeated by someone with basic tools and a few minutes of uninterrupted access to your door. High security locks are built to a different standard. They use hardened materials, more complex internal mechanisms, and patented key systems that resist picking, bumping, drilling, and unauthorized key duplication.
GTA Lockman supplies, installs, and services high security locks for residential homeowners and commercial businesses across Toronto and the Greater Toronto Area. We work with leading brands including Mul-T-Lock and Medeco, both of which carry UL 437 listing — the recognized benchmark for high security cylinder performance in North America. Our technicians assess your existing door hardware and recommend the right product for your property type, door configuration, and budget.
Whether you are upgrading a single front door, securing a commercial premises with multiple access points, or building a master key system around high security cylinders, we provide flat-rate pricing confirmed before any work begins and carry out the installation during a single scheduled visit.
Every GTA Lockman technician holds a valid Ontario locksmith licence, has completed a police background clearance, and carries full bonding and liability insurance. You can request to see credentials before work begins on your property.
Most doors — residential and commercial — ship with Grade 2 or Grade 3 hardware. Here is how that compares with a properly rated high security cylinder.
| Feature | Standard Lock (Grade 2–3) | High Security Lock (UL 437) |
|---|---|---|
| Pick resistance | Minimal — standard pin tumbler pins | High — rotating pins, security pins, or sidebar mechanism |
| Bump resistance | Limited — most standard cylinders are vulnerable | Engineered to resist bump key techniques |
| Drill resistance | Soft brass or zinc housing can be drilled efficiently | Hardened steel inserts protect the cylinder core |
| Key control | Keys can be copied at any hardware store | Patented blanks — copies require authorization card |
| Key duplication tracking | No record of who holds copies | Owner card system tracks all authorized copies |
| Master key compatibility | Limited — standard pins reduce security in master systems | Designed for complex master key hierarchies without compromise |
| Warranty | Typically 1 year or limited | Extended manufacturer warranty — often lifetime on cylinder |
A high security lock is most effective when combined with a solid door frame. Ask our technician about reinforcement plate installation if your current frame needs strengthening.
We carry products from the manufacturers that consistently achieve independent certification for pick resistance, drill resistance, and key control.
Mul-T-Lock cylinders use a telescoping pin-within-a-pin mechanism combined with a sidebar that must align independently before the cylinder can rotate. This combination makes the cylinder extremely resistant to picking and bumping. The Interactive+ and MT5+ systems add a second locking element that increases security further and carries full UL 437 listing. Key blanks are patented and supplied only through authorized dealers. We install the full Mul-T-Lock range including mortise cylinders, deadbolts, rim cylinders, and the Hercular high-security deadbolt.
Medeco combines angled key cuts with a rotating pin mechanism that requires both the correct height and the correct rotation angle to open. The result is a cylinder that is highly resistant to picking and that uses a patented key blank making unauthorized copying extremely difficult. Medeco cylinders are available in single and double configurations and integrate into commercial mortise locks as well as residential deadbolts. The Maxum and Biaxial lines are among the most widely recognized high security products available in the Canadian market.
ASSA Abloy is the parent company behind several high security brands and manufactures cylinders and lock bodies used in commercial and institutional applications across Canada. Their products appear in hospitals, government buildings, and multi-unit residential towers where key control across a large number of users is essential. We supply and install ASSA Abloy hardware for commercial clients requiring certified cylinders that integrate into a managed access control environment.
Schlage’s Primus cylinders add a secondary locking mechanism on top of the standard pin tumbler, requiring a key with both conventional cuts and a set of sidebar cuts milled into the key blade. This restricts duplication and provides meaningful resistance against picking. Schlage’s B-series deadbolts are one of the most commonly upgraded residential products we install when clients want a high security option without moving to a fully restricted key system.
Not sure which brand is right for your property? Call us at (647) 955-3277 and describe the door type, whether the installation is residential or commercial, and the level of key control you need. Our technician will explain the options and confirm a price before scheduling the visit.
Most residential break-ins do not involve a lockpick. They involve a boot to the door or a bump key. High security locks address both of those approaches: the cylinder resists bump techniques, and a hardened deadbolt throw combined with a reinforced strike plate makes a forced entry far more difficult.
The more common reason homeowners contact us for high security locks is key control. If you have a rental property, a property managed by a superintendent, or a home where contractors or caregivers have access, you need to know that a key cannot simply be copied at a hardware store and passed along. With a patented key system, the only copies that can be made are ones you authorize.
We install high security deadbolts and cylinders on front entry doors, rear doors, and suite entry doors in condominiums. If you are also considering updating your front entry hardware, we can discuss combining a high security cylinder with a new entrance handleset or a deadbolt upgrade during the same visit. For clients who want the access flexibility of keypad entry alongside physical key security, we also offer smart lock installation on doors where that configuration suits the property.
For a commercial property, high security locks serve two purposes simultaneously. They make the building harder to enter without authorization, and they provide documented key control so that the business owner always knows how many keys are in circulation and who holds them.
This matters most in environments with staff turnover, multi-tenant buildings, or properties with restricted areas. A standard rekey invalidates keys but cannot prevent a former holder from having taken a copy before leaving. A patented high security system ensures that no copy could have been made without a signed authorization on record.
We install high security cylinders as part of master key systems for commercial buildings, offices, and multi-tenant properties. A master key system built on high security cylinders gives managers single-key access to the whole building while ensuring restricted copies for individual units remain genuinely restricted. We also work with property management companies — details on our property management locksmith service are available on that page.
Other commercial applications include server room doors, pharmacy or dispensary cabinets, law office filing areas, and retail stock rooms where a record of who can access the area is a compliance requirement.
Key control refers to the ability to prevent unauthorized duplication of a key. With a standard lock, any key can be copied at a hardware store, a pharmacy, or a key kiosk using a blank that costs very little. There is no mechanism to prevent this, and no record of how many copies exist.
High security locks use patented key blanks. The blanks are not available to general retailers, and the machines needed to cut them are only provided to authorized dealers. When GTA Lockman installs a high security lock, you receive a key duplication authorization card. Any time you want a new copy cut, you present that card. This creates a paper trail and means that anyone who received a key — a contractor, a previous tenant, a former employee — could not have made a copy without your knowledge.
Some systems go further. Mul-T-Lock’s Interactive+ platform uses a second credential inside the key shaft that cannot be replicated by any standard key cutting machine. The combination of the outer profile and the inner element means that even someone who obtained the correct blank would be unable to produce a working copy without access to specialized equipment held by the manufacturer’s authorized network.
If you currently have a standard lock and want to evaluate your key control situation, our technician can walk you through the options during a site visit. In many cases a lock change to a high security cylinder is straightforward and uses the same door prep as the existing hardware.
Design and installation of key hierarchies for commercial and multi-unit residential properties. One master key, multiple restricted levels.
Supply and installation of Grade 1 and Grade 2 deadbolts for residential front and rear doors, including high security cylinder options.
Replace existing hardware with new locks of the same or upgraded grade. Suitable when current hardware has failed or a security upgrade is needed.
Controlled-entry door hardware for commercial properties. Can be combined with high security cylinders as a manual backup on the same door.
A high security lock is most effective when the door frame is reinforced. We install strike plate and door reinforcement hardware on the same visit when needed.
When existing hardware is in good condition, rekeying adjusts the cylinder pins to work with a new key without replacing the whole lock.
Select a question to read the answer.
The term high security lock generally refers to a cylinder that meets UL 437 certification — an independently tested standard covering resistance to picking, bumping, drilling, and pull attacks. In practice, the cylinder has a more complex internal mechanism than a standard pin tumbler lock, uses hardened materials at vulnerable points, and comes with a patented key blank that cannot be copied without authorization. Brands like Mul-T-Lock and Medeco are consistently recommended because they meet or exceed this standard and have long track records in residential and commercial applications.
Not every lock marketed as high security carries independent certification. Our technicians can walk you through the difference between a Grade 1 commercial lock and a genuinely UL-listed high security cylinder if you want to understand the distinction before making a decision.
Yes. When we install a high security lock, you receive a key duplication authorization card linked to your specific cylinder. To have additional copies cut, you present that card to any authorized dealer in the system — including us. The dealer records the copy, and you maintain a complete record of how many keys are in circulation. Copies cannot be made at a hardware store, kiosk, or any general key-cutting service because the blanks are not available to those outlets and the cutting profiles are patented. This is one of the primary benefits of a high security system over a standard lock.
Yes, and this is one of the strongest use cases for high security locks in a commercial setting. Standard master key systems achieve access hierarchy by using different pin combinations, but this typically reduces the overall security of each cylinder in the system. High security cylinders — particularly Mul-T-Lock and Medeco — are specifically engineered to maintain their pick and bump resistance even when integrated into a master key hierarchy. This means you can have a building manager key that opens everything, department keys that open specific zones, and individual keys for specific rooms, all without sacrificing the security of any individual cylinder. Call us to discuss the structure of your access requirements and we will design the system before providing a price.
In many cases, only the cylinder needs to change. If your door has a standard deadbolt or mortise lock with a cylinder that can be removed and replaced, we can often install a high security cylinder into the existing lock body. This is the more cost-effective route when the existing hardware is in good condition. If the lock body itself is worn, damaged, or a different configuration than the high security product requires, a full lock change may be more practical. Our technician will assess the existing hardware and recommend whichever approach makes more sense for your specific door before any work is agreed upon.
For a rental property, the key control aspect of a high security lock is often the most practical justification. With a standard lock, a tenant could have a key copied without your knowledge, and that copy remains valid even after you rekey for the next tenant. With a patented high security system, no copy can be made without your authorization card. Each change of tenancy requires either a new set of keys under the existing authorization card system or a cylinder rekey — both of which you control. Over multiple tenancy cycles, the incremental cost of a high security cylinder is often offset by the reduced exposure to unauthorized access.
A high security cylinder is significantly more resistant to drilling and cylinder pull attacks than a standard lock. The hardened steel inserts and anti-drill plates built into certified cylinders make targeted attacks on the lock mechanism much more time-consuming. However, the cylinder alone does not determine the strength of the overall installation. A solid lock on a weak door frame can still be defeated by a kick attack, which bypasses the cylinder entirely. For the most complete result, we recommend pairing a high security cylinder with a reinforced strike plate and, where appropriate, a full door frame reinforcement kit. Ask our technician about this when you book the installation visit.
GTA Lockman installs and services Mul-T-Lock, Medeco, Schlage, and other high security lock systems across Toronto and the GTA. All technicians are Ontario-licensed, background-checked, and insured. Flat-rate pricing is confirmed before any technician is dispatched. Call us to describe your property and we will recommend the right product and provide a price before scheduling the visit.
