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Another disadvantage of the mentioned method is that the thief can easily get at his disposal code sets that will allow him to unlock the device and ensure his work with another SIM card.

2001-12-14 ES ES01271731T active Active• In these cases, it would be necessary to block not the subscription, but the device itself.

Therefore, the demand that has arisen for the creation of systems that would prevent the use of stolen or lost devices is understandable, as a result of which every potential thief will no longer have the desire to proceed with practical actions, and he will prefer to return the lost device to the discovered owner.

Thus, in case of theft or loss of the device, you can inform the operator about it so that he blocks the subscription.

It should also be borne in mind that this method is not suitable for devices that provide the ability to replace this SIM card with another card.

For this, the terminal can be introduced, for example, GPS.

Another well-known method involves the use of so-called dialing for mobile phones.

Figure 1 you can see the various stages of the implementation of the proposed me 1.

2001-12-14 CN CNA018208541A active Pending• 2001-12-14 DE DE60136382T active Active• In addition, if the phone was stolen at the moment when it was turned on, then in order to be able to use it, it is enough for the kidnapper not to turn it off.

In the same way, in the case of theft, for example, of a computer, the first thing a thief does is to disconnect the computer from its peripheral devices.

We also mention that the pin codes currently in use are quite easily decrypted, so that their benefit becomes doubtful.

To date, the development of new technologies shows a tendency to a total transition to portable equipment, which leads to the appearance of an increasing number of communication devices or devices, united by the general concept of "nomadic" or "mobile", that is, those that can be carried with or included into the composition of systems operating in the most diverse environment, and more simply - those whose work is not tied to any strictly defined place.