How to make keys for the intercom do-it-yourself? Before you think about this issue, you should first find out what keys, blanks, duplicators are, how they are arranged and what they are.
What is a universal key for intercom?
You need to start with the fact that the keys to intercoms come in several forms. It can be either a contact “tablet” (usually an electronic carrier is attached to a special holder), and contactless key fobs, cards or magnetic keys, as well as two-contact keys, which are really rare. Each of these keys contains a certain code, which is entered there at the time of manufacture.
It is quite possible to rewrite this code if the firmware has not been finalized, and also if the key blank allows this.
Is it possible to make it yourself?
It is quite difficult to make a universal key for an on-door speakerphone simply because completely universal keys do not exist. There are some exceptions to this rule. Indeed, one magnetic key for the intercom (for example, from the "Factorial") can fit all the entrances of the house or coincide with any of the houses on the other side of the city.
Manufacturers may not really care about the difference in firmware, since in reality such coincidences make up only a fraction of a percent of the present quantity - one or two, rarely more than the entrances in the whole city. There is also a universal tablet for opening doorphone locks, but again it greatly depends on what kind of manufacturer it is. For example, a universal tablet from Factorial will not fit locks of other manufacturers.
What is a key blank for intercom?
The main technical characteristics that distinguish blanks are whether they are contact or non-contact. Also of great importance is the fact whether it is possible to rewrite the code on the workpiece, or whether this feature is missing. In addition, there are really a lot of manufacturers of such blanks - they all differ in small details, as well as in the quality of production. Cheap is plastic or expensive, for example. Thus, the magnetic key for the intercom can be very different from your usual.
What is a key duplicator for an intercom?
Duplicators can be both professional and the most primitive - the legislation of the Russian Federation is not violated in this case, since the patent rights to such equipment are not affected. Such devices enable a person to read the code of the original key - in the future it will be used to make a new key, which can be done either manually or automatically.
The simplest duplicators can work only with the most common blanks, and therefore they cannot be considered particularly useful, although this also gives some opportunities. But the quality of duplicates still leaves much to be desired, in addition, you will need to find out the make and model of the doorphone, and, after several attempts, you can still make the key to the doorphone.
Professional devices are much more useful. They have advanced technical characteristics, which results in a very high quality copy. It may even seem to the uninitiated that with their help it is quite possible to create universal keys for on-door speakerphones with your own hands, but this is not so. This device allows you to bypass the filter and use the duplicate as a native key, but nothing more.
True, the optimal workpiece is selected automatically, which significantly reduces the likelihood of errors and various defects. Also, such devices account for the manufactured copies, and these same copies will be guaranteed to serve as well as conventional keys.
Making keys to the intercom
To make them, you will first need to find out its model. If you can not do it yourself, then a professional duplicator will do everything for you. It is worthwhile to find out separately what kind of workpiece is needed - this information is publicly available. On the Internet, it is quite possible to find compatibility tables for duplicators and blanks and avoid unpleasant excesses. Making keys for the intercom using a duplicator will take from several seconds to several minutes. It all depends on your experience with such elements.
Do-it-yourself device
In fact, it’s quite difficult to make universal keys for intercoms with your own hands - everything rests on the above problem about the general differences of all existing systems. Realistically, such a task can only be performed by a person who is well versed in programming, and also has significant engineering skills. In general, the manufacture of keys for an intercom is a rather laborious process.
If you have your own duplicator, then for one intercom you can actually make a copy. But in order to make a universal key for an intercom, you need an emulator.
What is an emulator?
Actually, this is a device that allows you to open almost any door. There are limitations, but it is still much closer to truly universal keys. In fact, simply making a key to the intercom is not enough; writing software is really hard. Although even with the best software and a high-quality emulator, any door will not open before you.
Here the problem again lies in the difference between systems and even doorphone models from the same manufacturer. There is nothing complicated in setting up the emulator for one system, then the code will be selected according to a certain algorithm, which means that all intercoms of this brand will open literally by a wave of the hand. Everything becomes more complicated if there are at least two brands or two different schemes, this already means the presence of two algorithms. So, the emulator itself will have to understand which one to use in a particular situation, there are not so many options for how to make an intercom.
Even so, making the keys for the intercom with your own hands is quite realistic. But to make them completely universal is still impossible. This is too serious a task even for a team of programmers and engineers, especially since the electronic key will not open the magnetic lock and vice versa. Nevertheless, emulators for various systems can be found in reference books, and if you have experience or perseverance, it is quite possible to make universal keys for on-door speakerphones with your own hands. However, it will be easier to buy a factory duplicate.
Doorphone Myths
You already know that it’s still possible to make a universal key with your own hands, although it is quite difficult. The result will, of course, be slightly different than expected. You can talk about some people's misconceptions about intercom systems:
- On-door speakerphones do not have universal codes, this is the only difference between the Vizit system, where there really is a digital combination in the factory settings that allows you to open the lock without a key.
- Universal keys for intercoms simply do not exist - the systems and principles of operation of locks are too different, so it will not work to open everything with one key.
- The magnetic key for the intercom can not be demagnetized if you put it in a bag with a magnetic fastener or on speakers and so on. But to mechanically damage such a key is quite realistic, so careful handling should not be avoided.
So, we figured out how to make universal keys for intercoms with our own hands.