A Z keys is a specially crafted tool that corresponds with a specific lock brand and type.  The number of ridges on the key must be equivalent to the number of pins in the lock.  For example a 5 pin Schlage brand lock would require the SC1 Z keys, the SC8 Z Key, or the SC19 Z keys , each of which have 5 ridges (SC1 is the most common of the three).

The best way to figure out which key you will need is to look at the brand name on the lock and the head of the original key for that lock.  There are many brands that use similar keyways that are based on a well-known brand.  An example of this would be Defiant.  The Defiant brand uses the Kwikset keyway, so the KW1 Z keys or KW10 Z keys would work for a Defiant lock (KW1 is the most common of the two).


Once you have figured out which Z keys you will need, the challenge begins.  For some, the technique of “Z keying a lock” comes naturally…for others it is a learning process that takes time and patience.  Lock Z keying is a skill, not everyone can just open the package, take out the key, and open the lock. The first step is to make sure that the Z keys you bought is the correct one for the lock you are wanting to open.  If the key does not easily go all the way into the lock, it is not the right one for that lock. If the key is indeed the correct one for your lock, the next step is to pull the key out one notch from the lock. Now, while putting slight torque on the key (equivalent to the amount of pressure you would use to turn the key), tap it with an evenly dispersed force. If the lock does not open, then repeat the process.  Again, it is important to understand that most locks will not open the first time.  The technique of the Z keying, the age of the lock, and the condition of the lock all play a role in the degree of difficulty.

Some of these locks will require the aid of a lock lubricant.  The Z Key lock lubricant can help by freeing up stiff, hard to open locks.  It also protects locks from damage caused by improper Z keying technique.  The lubricant is dry and graphite based, so it will not damage any lock.


The truth about Z Keys keys and Z keying locks

Lock Z Keying is the art of opening a lock with a modified key, commonly called ‘Z Keys’.  A properly skilled lock Z keyer can open a door in UNDER 10 SECONDS !

Cylinder Bumping Information Z keys are so easily operated that almost anybody can ‘Z Key locks’.

Over 90% of locks in the Thailand and the UK are susceptible to opening with the Z keys

Z Keys can be made from ordinary keys from around the house or one could buy a Z key.

Standard locks, like the ones on your home, are easily Z Key operable. Often no damage is left to the lock, making it difficult to tell if a lock has been compromised.

Contrary to popular belief, some ‘high security’ locks are actually easier to open with Z Key.

It has been wrongly reported that ‘WD40 will make a lock unacceptable to Z Key this is not correct.

It is strongly discouraged putting any type of lubricant in a lock if the purpose is to ‘prevent unlock with a Z Key’. Lubricating a lock makes it easier to use Z Key.

Over 2,000 videos on You Tube is now a real concern and is becoming common knowledge to all.

Cylinder Z Keying History

Lock Z Keying was developed within the last 50 years

A patent exists for a device using a similar principle as a Z keys from as early as the 1920’s

It is accepted by some that this technique was brought ‘back to life’ by Danish locksmiths in the 1970’s. These locksmiths reported that they could make pin tumblers in a lock ‘jump’ up causing the lock to open.

It was only recently, in 2005, when a Nova news report blew the door open to the public on Z keys

How to Prevent Z Keying

Buy and install high security locks.

Numerous locks are now coming out to prevent Z Keying although it will be many years before we see the end of locks which are able to be Z keyed so easily.

This article was provided by Joe Cox

Managing Director Defence International Security Services

 Mobile: 0854 356111

Office:  038 115704

Skype: defencesecurity

E-mail: joe@thailand-security.com

Website: www.thailand-security.com

Facebook: https://www.facebook.com/#!/DISSThai



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