Master key or master keying is the capability to use one "Master" key to open one or more locks that are not actually keyed the same. Locks are safer because the restricted key-way decreases the possibility of accidental opening using the incorrect key.

Master keys are often used by apartment proprietors where by they are able to obtain access to each doorway of these rented rooms/flats, then occupants have their keys for their unit being rented. Other common areas in the apartment can also be opened using this key including the main door of the entire building. Unlike Master keys, a tenant's specific key will not work on the lock of a different apartment unit.

Complex master key systems involve multiple master, grand master and sub master keys. If you want to have one key to all different doors, then master key is what you need.

According to the requirements of the key holder, we are able to create different master key systems. When in an urgent locksmith emergency trouble, make sure to call our locksmiths at our emergency hotline number. Remember that you can easily reach us by phone 247.