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Master Keying Guide

A master key operates a set of several locks. Usually, there is nothing special about the key itself, but rather the locks into which it will fit. These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the change key), which cannot operate any of the others in the set, and the master key, which operates all the locks in the set. Locks that have master keys have a second set of the mechanism used to operate them that is identical to all of the others in the set of locks. For example, master keyed pin tumbler locks often have two shear points at each pin position, one for the change key and one for the master key. A far more secure (and more expensive) system has two cylinders in each lock, one for the change key and one for the master key.

Master keyed lock systems generally reduce overall security.[1] The fact that some pin chambers have two shear points allows for more options when picking and it also allows for more keys to operate. For example, a standard 6 pin cylinder, which was designed to be operated by only one key, can be operated by up to 26 = 64 keys if there are two shear points in each chamber.

  1. Shallow master keying requires the use of a master key with key cuts that are all more shallow than those of the tenant key. Note: The key cut combinations used here are examples only. 6 5 4 3 2 1 0 7 A M Shallow master key T Tenant key Circle the smallest number of each cut. The circled numbers are the required bottom pins. In shallow master.
  2. Master Key System Design Guide and Worksheets In addition to establishing strong key control policies that govern the distribution and management of keys, building an effective physical master key system is crucial to achieving the desired level of security.

Larger organizations, with more complex systems, may have several levels of master keys, where the top level key works in all of the locks in the system. To visualize this, it can be thought of as a hierarchical chart, or a tree.

Master Keying Guide

A practical attack exists to create a working master key for an entire system given only access to a single master-keyed lock, its associated change key, a supply of appropriate key blanks, and the ability to cut new keys.[1]

Below are some basic depth and space charts. If you are just getting started you might consider getting a Foley Belsaw key machine, they can be found on Craigslist for around $200 - $400. You can use it in conjunction wit the charts below to make a most common keys from code. Masterkeying a Schlage lock. There is also another pad to the north. There you will use the Eye of Veeshan key purchased from the vendor to port to your quest npcs for PoSky. The final pad is to the west, which takes you to Noble Dijan (Island 1.5), In order to use the pad you will need to buy a Key of Swords from the Key Master. Key of the Misplaced (Key to Isle 2).

Locksmiths may also determine cuts for a replacement master key, when given several different key examples from a given system.

Maison key system[edit]

A Maison key system is a keying system that permits a lock to be opened with a number of unique, individual keys.[2] Maison key systems are often found in apartment building common areas, such as main entrance or a laundry room where individual residents can use their own apartment key to access these areas. Unlike a master key system, where each individual lock has one individual operating key and one common master key, Maison lock is designed to be operated by every key within the system.

Because of the inherent lack of security in the Maison key system, some jurisdictions prohibit the use of Maison key systems in apartment and condominium complexes. In such locations, access is usually facilitated by either a high-security, key-controlled system or the use of electronic access control systems such as a card reader.

Master Keying Guide Free

See also[edit]

References[edit]

  1. ^ abBlaze, Matt (March 2003). 'Rights amplification in master-keyed mechanical locks'(PDF). IEEE Security & Privacy. 99 (2): 24–32.
  2. ^'The Maison Key System and Its Uses'. www.altonalocksmiths.com.au. Retrieved 2017-01-28.
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Master Keying Guides

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Master Keying Guide 2017

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Schlage Master Keying Instructions

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