Virtually all major manufacturers are taking measures to limit unauthorized copying of keys. Typically, they consist in the fact that copying the key may only be exercised specialized centers or authorized only by the factory. To ensure such protection applies patent protection keys. Typically, such mechanisms are implemented on the keys of the cylinder and electronic keys, but lately there and lever switches with protection against unauthorized copying. It should be understood that the copy protection keys can add some disadvantages (increased the cost of copies of the key terms and an increase in its production). At the same time protecting against unauthorized copying is an effective way to improve security. Above, we talked mainly about how manufacturers and installers of locking devices can improve safety.
Mention should be made and the measures that can be taken and the user. First of all, we are talking about controlling access to the keys and the the use of various means of restricting access. Such tools can be implemented as a cylinder, and at the lever locks: recoding the keys that allow just closing the lock, and various types of guest keys to open the lock only for a certain number of turns (this is realizable only in the lever models). In addition, consumers should remember that, if you suspect that a key could be charged an unauthorized copy, you must take steps to change the lock code. Large manufacturers of locks currently provide the possibility of replacing the code lock lever in several ways: by replacement of lever or by means of conversion. To change the code cylinder lock, you can either replace the cylinder mechanism, or take advantage of special cylinders with the ability to change the code (as a rule, such cylinders allow one or two times to move to a new key, and there are cylinders that can be used multiple times to reprogram a new key, but in Russia they do not occur). Must also give serious consideration to On the choice of the installer of the castle. Consumer or should completely trust him, or should be a guarantee that the installer was not possible to make a copy of the key. In any case, non-self-install the lock need to save the coordinates of the installer or the company-installer. Again: You can open any door, and methods of protection against illegal entry into a dwelling should not be limited only installing metal door. Nevertheless, the metal door is the first obstacle for the attacker, and with knowledgeable and skilled approach as a customer and the manufacturer's door this obstacle can become almost insurmountable for Most burglars.