Digital Door Locks - Supply & Install 

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Restricted Key Systems 

We supply restricted keys for strata, commercial business and home security in Perth

Perth's leading supplier of electronic access control locks

Smart Key Control for Safer Homes & Businesses

High-Security Access Starts with the Right Key

A restricted key system is a high-security locking system designed to prevent unauthorised key duplication and improve overall access control. It uses specially designed keys and lock cylinders that are protected by patent or design registration, meaning that the keys can’t be copied without permission from the lock’s registered locksmith or manufacturer.


  • Only an authorised person (such as a business owner or property manager) can request additional keys.
  • Keys are typically stamped with a unique code and require identification to be duplicated.
  • The lock cylinders are more secure and resistant to picking or tampering.


Restricted key systems are ideal for commercial buildings, government facilities, schools, and any property where key control is a priority. They offer peace of mind by ensuring that you always know how many keys are in circulation—and who has them.

restricted key system 4KS - authorised locksmith

Keys You Can’t Copy Without Permission!

Restricted Key Systems Features


  • Restricted Key Copies

    The key blanks used in restricted systems are patented or proprietary, meaning they are not available for purchase in general stores. Only authorized locksmiths or key holders can duplicate them with proper approval.

  • Key Control

    The system provides strict control over who can make copies of the keys and tracks who holds them. This is important for businesses that want to ensure only trusted personnel have access to certain areas.

  • Higher Security

    Since unauthorised duplication is not possible, the risk of key duplication falls significantly, providing better protection for sensitive areas like server rooms, storage areas, or offices.

  • Master Key Options

    Many restricted key systems offer master key solutions, where a single key can access multiple locks while maintaining separate access for individual keys, allowing for controlled access within different zones of a building or facility.


    Read more about Master Key Systems >>

  • Audit Trail

    Some restricted key systems can be integrated with key management systems to track key usage and access events, which can enhance security by providing a clear record of key usage.

Restriction Key System Tailored to Your Needs

Construction keyed system

construction keyed system

Construction keyed system

A system where it is necessary for contractors to gain entry to a building during construction but to prevent entry by the same contractors after the building has been occupied or handed over. It is possible to change from construction keying to normal as often as required.

Maison keyed system

maision keyed system

Maison keyed system

This system is widely used in apartments, flats, office blocks, hotels and motels. Each apartment, flat or office has its own individual key which will not operate the lock to any other apartment, flat, hotel room or office, but will operate the locks to communal entry doors.

Grand master keyed system

grand master keyed system

Grand master keyed system

The grand master keyed system is an extension of the master keyed system where each lock has its own individual key and the locks are divided into two or more groups. Each group of locks is operated by a master key, and the entire system is operated by one grand master key.

Master keyed system

master keyed system

Master keyed system

A master keyed system is one where each lock has its own individual key which will not operate any other lock in the system, but where all locks in the system can be operated by one master key.


Learn more about Master Key System >>

Keyed alike system

keyed alike system

Keyed alike system

This system allows for a number of locks to be operated by the same key. It is ideally suited for residential applications such as front and back doors. There is no limit to the number of locks which can be keyed alike.

Individually keyed systems

individually keyed system

Individually keyed systems

With and individually keyed system, each lock can only be opened by its own unique key.

Why choose us

When it comes to upgrading your security with keyless entry, working with a qualified commercial locksmith makes all the difference. 

Expert Installation & Setup

From smart locks to access control panels, they ensure your keyless entry system is installed correctly and functions seamlessly.

Custom Solutions

Every business is different. A commercial locksmith can design a custom keyless entry system that suits your layout, staff structure, and security needs.

Fast and Reliable

Downtime is costly. Commercial locksmiths are trained to work efficiently, minimising disruptions while ensuring your system is up and running in no time.

in-depth Security Knowledge

We understand the latest in digital security and can recommend systems that meet current safety standards—while also helping you future-proof your property.

Support and Maintenance

From system upgrades to troubleshooting, a reliable locksmith provides continued support to keep your keyless entry system secure and up to date.

Licensed and insured

With a certified commercial locksmith, you’re working with a professional who’s licensed, insured, and backed by industry standards—giving you confidence in every aspect of the job.

Businesses and Offices

Keyless entry systems are a game-changer for modern offices and commercial spaces. They eliminate the need for physical keys, allowing employees and managers to access secure areas using PIN codes, key cards, or mobile apps. This not only streamlines entry but also makes it easier to manage who can go where—especially in companies with multiple departments or restricted areas. From small offices to large corporate buildings, keyless systems offer convenience, flexibility, and enhanced security.

Public Institutions

For schools, government buildings, libraries, and other public institutions, keyless entry solutions offer a safe and efficient way to control access. These systems help restrict entry to sensitive areas like administrative offices, storage rooms, and staff-only zones, while still allowing smooth flow for authorized personnel. With options like scheduled access and activity logs, keyless systems also improve accountability and make it easier to manage multiple entry points across large facilities.

Proud members of the Australian Security Industry Association Limited

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HIgh-quality & rapid locksmithing services and corporate solutions. Contact us today!

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