A high-security cylinder costs several times what a hardware-store lock costs. Understanding what that money buys makes it easy to decide whether your door needs one.
Key control
This is the most valuable and least discussed feature. Restricted keyways use patented blanks that aren't sold openly, so keys can only be duplicated by an authorised dealer with your permission. For a rental property, a business or anyone who has handed out keys, this alone can justify the upgrade.
Pick and bump resistance
Security pins, tighter tolerances and secondary locking elements such as sidebars make a cylinder far harder to manipulate. Standard pin-tumbler cylinders are straightforward for anyone who has practised.
Drill and pull resistance
Hardened steel inserts and anti-pull features resist the fast, loud attacks that actually get used on doors — drilling the plug or gripping and pulling the cylinder out.
Where it's worth it
- Businesses holding stock, cash or client data
- Rental and multi-unit properties where keys circulate
- Doors that are out of sight from the street
- Any door where a previous break-in showed the weakness
Where it isn't
A high-security cylinder in a hollow door with a soft frame is money in the wrong place. Reinforce the frame and the door first, then upgrade the cylinder.
