Architectural Hardware
Automatic Doors & Gates
Electronic Access Systems
ID Card Systems
Key Systems
Security Camera Systems
Contact Us


Key Systems

A restricted key system is a patented key system that is restricted to specific locksmiths who are members of an association, such as the Master Locksmith Association of Australasia (MLAA). Only the locksmith who created this system can make changes, such as cut extra keys or change locks, under written authorisation from a nominated signatory.


  • Provides increased security to a building

  • Provides strict key control

  • Keys will only be cut when requested by an authorised signatory

  • Locks can only be changed by the authorised signatory

  • Computer key management software is available for your computer

  • Additional security is achieved by choosing a key system that is controlled by a limited number of locksmiths

Active Lock & Key currently offers several high security restricted key systems with valid patents for many years. The following table highlights four of these systems and their listed features and benefits.