Master Key System: Structure, Function & Tips

If several people enter and enter a building and each has slightly different rights and areas of responsibility, this places a variety of demands on the locking system. That's where the master key system comes into play. This article shows how it is structured and works, what companies should consider and why the combination with digital solutions is recommended here.

What is a master key system?

A master key system – also  known as a GHS system – is a highly structured locking system. It is therefore mainly used in large and complex organizations – such as corporate complexes, universities or large public institutions.

Master key systems make differentiated access control possible. They work with clear hierarchies of locking authorizations. This greatly increases the safety of buildings.

Which keys are part of a master key system?

A master key system is made up of several components :

• Master Key (GHS): This is the top key in the system. It is located at the very top of the hierarchy, as it gives you access to all the castles in the complex. It is usually used by the highest administrative staff.

• Master key (HS): A master key can be used to close all locks of a defined main group. For example, you have access to all doors of a building. Or it refers to a single department.

• Group Key (GS): This key closes locks of a specific subgroup within a main group.  

• Single Key (ES): As the name suggests, a single key is only responsible for a single lock. As a rule, it is used by people who only have access to certain rooms.
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Advantages and disadvantages of a master key system

‍Are you thinking about getting a master key system to increase the security of your building and ensure a comprehensive structure? We have compiled the most important advantages and disadvantages of master key systems for you.  

‍Advantages of master key systems

• Security: Effective security monitoring is possible thanks to centralized control over different levels of access. Since the administration and documentation of key issuance is centralized, no unauthorized persons can access a key.

• Efficiency: Thanks to the hierarchical structure of a master key system, users can reach the desired area quickly and easily. User-friendliness and efficiency go hand in hand here.

• Flexibility: Access authorizations can be flexibly adjusted. For example, you can add new locks or change permissions if adjustments are needed.

• Emergency management: In an emergency, quick access by authorized persons is possible. ‍

Disadvantages of a master key system

Possible disadvantages of a master key system are the high acquisition costs. Such systems are extensive and complex. But that also makes them worth every penny.

It is not only the design of a master key system that is complex. Administration, maintenance and care can also involve a lot of effort. In this case, we recommend a competent partner who will be at your side and provide you with ongoing advice and support in the tasks that arise.  

The loss of a key causes difficulties. As a rule, the entire system must be replaced – at least if the master master key has been lost. Security risks therefore always exist.

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Master key system vs. master key system – what are the differences?

The master key system (GHS) and the master key system (HS) may easily be confused due to the similar terminology. However, this refers to two fundamentally different systems. They can be distinguished from each other on the basis of the following differences:
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Master key system and digitization – an outlook

Digitalization is making itself felt in all areas – including and above all in building security. Although master key systems are considered secure, the trend is increasingly moving towards digital solutions.

In this way, a master key system can be combined with other security systems. This makes the structure even more complex and can increase security even further. A combination with video surveillance, alarm systems and electronic access control systems is recommended.

With providers such as BlueID,  you can also get tailor-made solutions that work like a master key system, but completely dispense with physical keys. In this way, the possible disadvantages such as the risk of losing keys are completely eliminated.

Instead, digital access media are  used: PIN codes, biometric features, transponders, RFID chips and more. For example, master keys, master keys and the like still serve their usual purpose. However, they come in the form of a key card or a chip. The  authorizations for the access media are easily managed in software . This allows you to flexibly adjust at any time who has access to which rooms with which digital key.

Conclusion

Master key systems offer many advantages and stand above all for a high level of security and clear hierarchies. It is particularly advantageous to combine such systems with the approaches of digitalization. With a master key system that works with electronic access media, you can enjoy the best of both worlds. You will find what you are looking for at BlueID.