

High security · Mississauga
High Security Locks
You run a home office with client files and equipment, and your insurer has asked what kind of lock is on the door.
In plain words
High security locks are cylinders and deadbolts designed to defeat the methods used against ordinary doors. Inside the cylinder a second locking mechanism, usually a sidebar released by finger pins or rotating pins, has to be satisfied at the same time as the normal pin stack, which is what stops picking and bumping. Hardened steel inserts stop drill bits. The bolt is thicker and carries a hardened pin against sawing, and a reinforced strike ties the lock into the wall framing. Just as important, the key is cut on a patented blank that only an authorised person can have copied, so your key count stays known.
How the visit goesA colleague showed you a video of a lock being opened with a bump key in a few seconds. Then you went home and noticed your own deadbolt is the same style, bought at a hardware store a decade ago.
High Security Locks
How the visit goes


Who holds keys and who should
For a business or a rental, the locksmith asks to see the key list, or helps you start one. Which keys exist, who carries them, which doors they open, and what happens when someone leaves. This is where the case for a patented or restricted key system becomes clear, because the system replaces guesswork with a register: every key numbered, every order authorised by a named person, and no blanks available outside the locksmith who manages it. The locksmith also asks how many people need to reach each area so the keying plan reflects the way the building actually runs.
Setting up controlled keys
The key system is registered to you before the first key is cut. The locksmith records the system, the authorised signatories and the number of keys issued, and hands you the authorisation card or online validation details. Every key is cut from code rather than copied, because the angled cuts or side milling must be exact for the sidebar to release. Extra keys later are ordered by an authorised person and logged, and blanks are not sold outside the manufacturer's network. This is what makes a key stop being a thing anyone can duplicate at a kiosk.
Proof for insurers, landlords and tenants
You leave with a written record of what was fitted: the cylinder type and its rating, the deadbolt grade, the strike and screws installed, and the key system registration. Insurers sometimes ask for this when a policy specifies stronger hardware, landlords keep it in the property file, and tenants have something to hand back at move-out. It also helps the next locksmith, who can see at a glance what keyway and format the doors carry. Keep the invoice and the key control documents together; they are the paperwork side of a physical upgrade.
High Security Locks
In the van
Key control authorisation card
Three-inch strike and hinge screws
High-security cylinder
Commercial mortise lock body
Wrap-around door reinforcer

High Security Locks
What affects the quote
Documentation and registration
Setting up the key register, recording signatories and providing a written schedule of cylinders and keys is real work on a business system and is listed rather than hidden.
Cylinder rating and format
A patented residential cylinder, a laboratory-rated commercial cylinder and an interchangeable core sit at different points on the scale, and the format that fits your present hardware decides which lines are available.
Key control level
A patented keyway with authorisation cards covers most homes. Geographically exclusive keyways and signature-controlled systems for businesses carry registration and administration that show in the quote.
What to have ready
- Is this a house, condo, rental unit or business premises, and do you own or manage it?
- Which locks are on the door now: knob only, knob and deadbolt, a mortise lock or a lever?
- Does the door have a closer, push bar, alarm contact or keypad on it already?
High Security Locks: questions
QuestionsShould I upgrade the front door only, or every door?
Start with the doors that matter and the ones that are weakest, which are often not the same. Front doors usually carry the sturdiest hardware already; the side door by the driveway, the door from the garage and the basement walkout often carry the lightest locks and get the least attention. The assessment walks the whole perimeter with you so the upgrade goes where entry is most likely, and the remaining doors can join the same key later.
Is a high security cylinder really pick proof?
Nothing is beyond a laboratory with unlimited time, so the honest measure is minutes, not absolutes. Rated cylinders are tested to resist skilled picking and impressioning for a set period, and drilling and forcing for another. In the real world that matters because someone at a door has seconds, not a workbench. The sidebar and false grooves in the pins give a picker nothing reliable to feel, and the hardened inserts stop a bit, which is why these attacks move on to easier doors.
What actually makes a lock high security?
Three things working together. The cylinder has a second locking mechanism, usually a sidebar released by finger pins or rotating pins, plus hardened steel in the path of a drill, so picking, bumping and drilling take far longer than on an ordinary lock. The deadbolt and strike are heavier and fastened into the framing. And the key is cut on a patented or restricted blank that only an authorised person can have copied. Remove any one and the door is weaker than the label suggests.
