Master Keys @ Universal International
Universal International FZCO also provides comprehensive Master key solutions, which is a one stop solution for Master Keyed Cylinders. We have established a centralized master keyed cylinders manufacturing facility in Jabel Ali Free Zone, Dubai. The master key solutions include the functions of engineering, procurement and information systems that would enable our customers to access vide range of products with standardized quality.
At Universal International, the Master Key is Engineered with the following unique features…
Patented Key Way
Drill Resistance
Bumping Resistance
Burglar Proof
No Cross Keying
A know how about Master Keys and its functions
Master keys are something that many people seem to be fascinated with. The fascination, we believe, is due to the confusing nature of the device. It is that one key which opens multiple doors. The specially involved here is that there is some math and calculation involved in design of Master Keys. At the lowest level of comprehension, it is addition and subtraction, and at the highest level of understanding it is exponents. After reading this piece, you should be able to understand any master key system, varying from the simplest version to the most complex. With the basic understanding, one should be able to extrapolate potential additions to the system’s security.
Change Key
This key is also referred to as a sub-master key. It will open one lock and only locks that are exactly the same. The lock that the change key opens will also open with the use of the master key, and any key above that rank.
Master Key
Without a master key, there is only one key for a lock. This is the necessary key to change a simple lock into a master keyed lock. In some systems, this will be the highest-ranking key. In the trade, a master key may be shortened to ‘MK’.
Grand Master Key
A grand master key is used to access multiple master key systems. This key will open every master system under it, and the subsequent change keys under those systems. In the trade, a master key may be shortened to ‘GMK’.
Great Grand Master Key
The great grand master key will open all the grand master key systems under it, the master key systems under those, and the change keys under those. Theoretically, this trend can continue until the locks become too complicated to function. There could be grand master keys prefaced with great great great great, etc.
Most master key systems work-off of a basic pin tumbler lock. A quick review on how a basic pin tumbler lock will work: To open a lock a pin stack consisting of a driver pin and a key pin must be elevated so that the two rest on opposite sides of the shear line. A key lifts key pins within a lock. These key pins are all different sizes. The driver pins will be a universal size. Therefore, the key needs to have the right set of grooves to lift the key pins to the correct height. It is an oversimplification, but if you would like to find out more about the specifics you can check out the house lockouts section of our website. With that understanding, it will be easier to comprehend the addition of a master key system. All that is needed for any standard pin tumbler to be converted for a master key system is to add a master wafer (aka master pin) between a driver and key pin. A master wafer is virtually a small hockey puck shaped pin. Once it is in place, the pin stack will have two shear lines. A shear line for a pin stack with a master wafer below or above the line.
Security
Master keys are something that many people seem to be fascinated with. The fascination, we believe, is due to the confusing nature of the device. It is that one key which opens multiple doors. The specially involved here is that there is some math and calculation involved in design of Master Keys. At the lowest level of comprehension, it is addition and subtraction, and at the highest level of understanding it is exponents. After reading this piece, you should be able to understand any master key system, varying from the simplest version to the most complex. With the basic understanding, one should be able to extrapolate potential additions to the system’s security.
Conclusion
A master key system allows two or more keys to open one lock. To make a master key system, you need locks and keys that are the same make and model, and a way to rekey those locks. The basic pin tumbler master locks use a master wafer/pin in between the key pin and the driver pin. Although these systems often use pin tumbler locks, they can use different lock types for varying levels of security. The main selling point for master keys is that they limit the amount of keys needed to open multiple locks. These systems can get pretty complicated with the introduction of grand master keys and great grand master keys. The more master wafers, the more keys there are that can open the lock because the number of shear lines increases. Master key systems are very susceptible to picking and decoding. Anytime you are attempting any work on your own security, evaluate your strengths and weakness. There is no need to break your door locks (an important part of home security) in the hopes of saving a few dollars. Do not use any of this information for criminal activity. Be safe, and know your security.
